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What's New on the 2027 GMC Sierra 2500 HD: New Engine Codes, Allison 10-Speeds, and an 18-Inch Floor

Coastal Dune 2027 GMC Sierra 2500 HD SLE on its standard 18-inch wheels parked in front of the showroom at Beadle Chevrolet GMC in Mobridge

GM released the first edition of the 2027 GMC Sierra 2500 HD order guide on September 11, and I read all of it so you would not have to. The short version: the two engines wear new codes, both transmissions now carry the Allison name, the 17-inch wheel is gone, the GVWR ceiling moves up to 12,300 pounds, and adaptive cruise control is standard on every trim from the Pro to the Denali Ultimate. The seven trims, the cab rules, the eight colors, and the Max Trailering Package all carry over as they were.

The longer version includes the part most dealer websites skip: GM has not published horsepower, torque, towing, or payload for the 2027 truck, so you will not find a 2027 rating on this page. If you need the fully rated truck today, the 2026 Sierra 2500 HD buyers guide covers the rated truck with every number in the door jamb, and the buy-now-or-order-a-2027 post weighs the two against each other.

What Does the 2027 Order Guide Actually Say?

It says the 2027 Sierra 2500 HD is the same seven-trim truck with changes under the hood codes, under the fenders, and in the standard safety list. It says nothing about towing, payload, curb weight, or engine output, because the first edition has no specification or trailering pages. Both halves matter when you are deciding what to order.

Item 2026 Sierra 2500 HD 2027 Sierra 2500 HD
Engine codesL8T gas V8 and L5P Duramax, both with published outputL8S gas V8 with direct injection and variable valve timing; L6P Duramax turbo-diesel V8, B20-compatible; output not yet published
Transmission10-speed automatic on both enginesAllison 10-speed automatic on both engines, plus the PTO version on Pro and SLE diesels
Base wheel and tire17-inch aluminum on an all-season tire18-inch machined aluminum on an LT265/70R18E all-season; no 17-inch offered
Top GVWR11,900 lb12,300 lb, Crew Cab long bed 4WD Duramax with Max Trailering
Cruise controlConventional on Pro, SLE, SLT; adaptive by package or on AT4 and upAdaptive cruise standard on all seven trims
Technology PackageAT4 and upAdds the SLT
Towing, payload, GCWR pagesPublishedNot yet; coming in the GM Trailering Guide

Everything in that table comes straight from the guide, not from a press release or a forum. Where the guide is silent, this post is silent too. The 2027 Sierra 2500 HD buyers guide carries the trim-by-trim detail; the sections below explain what each change means on a gravel section line.

Two New Engine Codes: Why Are We Not Quoting Horsepower Yet?

Because GM has not printed it. The 2027 guide lists the gas engine as code L8S, "V8 with direct injection and variable valve timing," and the diesel as code L6P, "Duramax turbo-diesel V8, B20-compatible." Neither line carries a displacement, horsepower, or torque figure. For reference, the 2026 Sierra 2500 HD is rated by GM at 401 hp and 464 lb-ft from its 6.6L gas V8 and 470 hp and 975 lb-ft from its 6.6L Duramax, and we are not assuming those numbers carry to the 2027 until GM says so.

What we can say is what the guide says. The gas V8 is standard on the Pro through the Denali with the 3.73 axle and a 170-amp alternator; E85 capability has been dropped. The Duramax is available on the Pro through the Denali and standard on the Denali Ultimate, which is still not offered with gas. Every Duramax includes the block heater, the exhaust brake, the 220-amp alternator, and dual 730 CCA batteries, and it is the only engine that can take the winter grille cover. Dual alternators, 220 plus 170 amps, are available on every trim. Axle ratios stay fixed to the engine, 3.73 gas and 3.42 diesel.

The transmission line is the other change. In the 2026 guide both gearboxes were simply "10-speed automatic." For 2027 the gas, diesel, and diesel PTO transmissions are each printed as "Allison 10-speed automatic." The PTO version is still limited to the Pro and SLE with the Duramax and 4WD. Gas buyers get the Allison name for the first time; whether anything mechanical changed inside is not something the guide says, so I will not say it either. The engine section of the 2027 guide keeps the current wording as GM updates it.

What a new engine code does and does not mean

A new RPO code is a signal that GM revised or replaced the engine, not proof of what changed. Any site printing 2027 horsepower or a 2027 tow rating today is either guessing or copying the 2026 figure and hoping. When the 2027 GM Trailering Guide lands we will update this post and the buyers guide the same day.

17-Inch Wheels Are Gone: What Is the New Base Wheel and Tire?

The 18-inch machined aluminum wheel with dark grey pockets, last year's SLT wheel, is now the base retail wheel on the Pro and standard on the SLE and SLT. It rides on a new LT265/70R18E all-season tire with a matching spare. The 17-inch aluminum and steel wheels and the 17-inch tires do not appear anywhere in the 2027 guide.

The rest of the ladder holds. An 18-inch steel wheel remains for fleet orders only. The LT275/70R18E all-terrain is standard on the SLT, available on the Pro and SLE, and included with the X31 Off-Road and Protection Package, which also brings the 20-inch bright-face wheel. The AT4, Denali, and Denali Ultimate keep their 20-inch wheels on LT275/65R20 all-terrains, the AT4 can still take the BFGoodrich KO3, and 20-inch and 22-inch dealer-installed wheels remain on those three. The AT4X gets a new 18-inch wheel code on its 35-inch LT305/70R18 mud-terrains, and the AEV Edition keeps its AEV Salta wheels.

Here is why the wheel change is more than trim. The Max Trailering Package requires 18-inch or larger wheels, and until now a base Pro or SLE on 17s had to step up a wheel to take it. For 2027 every Sierra 2500 HD already meets that requirement, so the package decision is down to the Duramax, the cab, and the trim. One wrinkle: the all-season base tire is not available with the package, so a package truck goes on the all-terrain, which on a gravel section line is what I would recommend anyway. The 2027 towing and Max Trailering post walks through the package on the new truck.

Close-up of the 18-inch machined aluminum wheel with dark grey pockets on a 2027 GMC Sierra 2500 HD at Beadle Chevrolet GMC in Mobridge

The 18-inch machined aluminum wheel with dark grey pockets is the floor of the 2027 lineup: base retail on the Pro, standard on the SLE and SLT, and already the size the Max Trailering Package asks for.

GVWR Tops Out at 12,300 Pounds: What Does That Tell You?

It tells you the 2027 truck is allowed to weigh more, loaded, than the 2026 truck was. GVWR is the most the truck itself may weigh with people, fuel, cargo, and the hitch weight of the trailer on it. The 2027 menu runs from 10,000 pounds with the lowered-GVWR option up to 12,300 pounds on a Crew Cab long bed 4WD Duramax with the Max Trailering Package. The 2026 ceiling was 11,900 pounds.

A few points on the menu follow the cab and engine you pick. A Crew Cab standard bed 4WD Duramax with the package is 12,150 pounds; a Crew Cab long bed 4WD Duramax without it is 12,000 pounds; the same truck with the gas V8 is 11,350 pounds. The AT4X moves from 11,025 gas and 11,350 diesel in 2026 to 11,150 and 11,750 for 2027. The lowered 10,000-pound option is still offered on the Pro, SLE, SLT, Denali, and Denali Ultimate, not on the AT4 or AT4X, and it still reduces towing and payload.

What GVWR does not tell you is the part to be careful with. It is not the trailer rating and it is not GCWR, the truck-and-trailer total. A higher GVWR usually means more payload, but payload is GVWR minus curb weight, and 2027 curb weights are unpublished, so there is no honest 2027 payload number to give you. The 2026 truck is rated up to 20,000 pounds conventional and 22,390 pounds gooseneck, properly equipped, and those 2026 figures are in the 2026 towing section. For the 2027, the trailering information label in the driver door jamb of the truck that arrives is the final word; until then the 2027 GVWR section is the only capability number we publish.

Adaptive Cruise, Bicyclist Braking, and an SLT Head-Up Display: What Is New Inside?

Three things, and the first is the biggest for a Pro, SLE, or SLT buyer. Adaptive cruise control is standard on all seven trims for 2027. On the 2026 truck the Pro, SLE, and SLT came with conventional cruise, and adaptive cruise took the SLE Preferred or SLT Preferred Package; only the AT4 and up had it standard. Now a base Pro work truck holds its following distance on Highway 12 the same way a Denali does, which on a February morning with a stock trailer behind you and a grain truck ahead is worth more than any chrome.

Second, the standard Sierra HD Pro Safety group renames one of its pieces: Front Pedestrian Braking becomes Front Pedestrian and Bicyclist Braking. The rest of the group, Forward Collision Alert, Following Distance Indicator, Automatic Emergency Braking, Lane Departure Warning, IntelliBeam, and Buckle to Drive, is unchanged and standard on every trim. Pro Safety Plus on the SLE and SLT still adds Trailer Side Blind Zone Alert, Rear Cross Traffic Alert, park assist, and the trailer cameras on Crew and Double Cabs.

Third, the Technology Package, the Rear Camera Mirror plus the 15-inch head-up display, reaches the SLT for the first time, with the SLT Preferred Package or the SLT Premium Package. On the 2026 truck it was AT4 and up only. The SLT is a popular trim around here, and the camera mirror is the piece I would push hardest for anyone who pulls a gooseneck stock trailer, because a loaded trailer blanks a regular mirror and the camera sees past it. It stays in the AT4 Premium Plus and Denali Reserve packages and standard on the AT4X and Denali Ultimate.

What Did Not Change for 2027?

Most of the truck. The seven trims are the same, and so are the cab rules: Pro in Regular, Double, or Crew Cab with 2WD or 4WD; SLE in all three cabs, 4WD only; SLT and up as Crew Cab 4WD only; AT4X as a Crew Cab standard bed only. The Denali Ultimate is still Duramax only.

The Max Trailering Package still adds the 3500 HD frame, leaf springs, and shocks, the 12-inch rear axle, the spray-on bedliner, and the gooseneck and fifth-wheel prep; it still requires the Duramax and is still not offered on the Double Cab or the AT4X. Gooseneck prep is available on all seven trims. Snow Plow Prep, the heavy-duty front camper spring, and both X31 packages carry over with the same rules. Every trim package has the same contents it had, with one exception: the SLE Preferred Package no longer lists adaptive cruise because it is now standard.

The eight colors carry over with no addition and no deletion; Coastal Dune and Glacier White Tricoat simply lose the "new" tag they wore in 2026. The interiors, the screens, the Bose systems, the MultiPro tailgate on the SLT and up, and the 12 tie-downs at 500 pounds each are unchanged. Everything the what-was-new-for-2026 section introduced last year is still here as the second-year version.

How to Spec a 2027 Sierra 2500 HD Order Using Only What Is Verified

You can build a sound 2027 order today without a single unpublished number, because every decision that matters is an equipment decision.

  1. Pick the engine by the job, not the rumor: the Duramax if you pull a gooseneck, want the Max Trailering Package, or need the PTO transmission; the gas V8 if the truck mostly carries and occasionally tows.
  2. Choose cab, bed, and drive: this sets your GVWR code. A Crew Cab long bed 4WD Duramax is the 12,000-pound truck without the package and the 12,300-pound truck with it.
  3. Decide on Max Trailering now: it cannot be added later, it needs the Duramax, and it is not available on the Double Cab or the AT4X.
  4. Pick the tire for the road you live on: the all-season base tire is fine for pavement; for county gravel take the all-terrain, which is required with the package anyway.
  5. Layer the packages: Snow Plow Prep and dual alternators for a winter truck; the SLT Preferred Package plus the Technology Package if you want the camera mirror.
  6. Read the label when it lands: the trailering information label in the driver door jamb carries the payload and trailer ratings for that specific truck. Compare it to the 2026 truck before you hook anything to it.

Is the 2027 Sierra 2500 HD the One to Order?

Worth it if Skip it (buy the rated 2026 on the lot) if
You want adaptive cruise on a Pro, SLE, or SLT without paying for a package
You are an SLT buyer who wants the camera mirror and head-up display
You want the highest GVWR ceiling GM has put on a 2500 HD
Your truck can arrive over the winter in the exact color, cab, and package you want
You need a published tow rating and payload before you sign
Calving, a hay contract, or a snow contract needs the truck this fall
You want to see, drive, and weigh the exact truck first
You are matching the truck to a trailer that is already near the limit

Key Takeaways

  • The 2027 Sierra 2500 HD carries new engine codes, L8S gas and L6P Duramax, and both transmissions are now printed as Allison 10-speed automatics.
  • GM has not published 2027 horsepower, torque, towing, or payload; the only new capability number is a GVWR ceiling of 12,300 pounds.
  • 17-inch wheels are gone; the 18-inch aluminum wheel is the base, which means every 2027 already meets the Max Trailering Package wheel requirement.
  • Adaptive cruise control is standard on all seven trims, and the Technology Package reaches the SLT.
  • Trims, cab rules, the eight colors, and the Max Trailering Package rules are unchanged; the rated 2026 truck is the one to shop against today.

Frequently Asked Questions

Is the 2027 Sierra 2500 HD engine new?

The codes are new: L8S for the gas V8 with direct injection and variable valve timing, and L6P for the Duramax turbo-diesel V8, B20-compatible. GM has not printed displacement, horsepower, or torque for either one, so we do not know yet what changed inside. Both pair with an Allison 10-speed automatic.

What is the 2027 Sierra 2500 HD towing capacity?

Not published yet. The 2027 order guide has no trailering pages; the ratings will come in the GM Trailering Guide. The 2026 Sierra 2500 HD is rated up to 20,000 pounds conventional and 22,390 pounds gooseneck, properly equipped, and those 2026 figures are the ones to shop against today. When a 2027 arrives, the trailering information label in the driver door jamb carries its rating.

Are 17-inch wheels still offered on the 2027 Sierra 2500 HD?

No. The 18-inch machined aluminum wheel on an LT265/70R18E all-season tire is the retail base, an 18-inch steel wheel is fleet-only, and the all-terrain, 20-inch, 22-inch, and AT4X 35-inch options sit above that. Every 2027 Sierra 2500 HD therefore meets the Max Trailering Package wheel requirement from the factory.

Is adaptive cruise control standard on the 2027 Sierra 2500 HD?

Yes, on all seven trims, including the Pro work truck; conventional cruise control is no longer listed. On the 2026 truck, adaptive cruise was standard only from the AT4 up and took a package on the SLE and SLT.

My Take on What Is New for 2027

The honest headline is that the 2027 Sierra 2500 HD is a better-equipped version of a truck that did not need fixing, with one large unknown attached. Standard adaptive cruise on a Pro, the camera mirror on an SLT, 18-inch wheels on every truck, and a higher GVWR ceiling are real, verified, and worth having. The engine codes are new and the numbers are not out, and I would rather say that plainly than print a figure I cannot stand behind at the scale.

If your operation can wait for a truck that builds over the winter, spec it on equipment the way the how-to above lays out. If you need a rated truck before calving, the 2026 is the same seven trims with every number already in the door, and I will put both in front of you side by side.

The full trim, package, wheel, GVWR, and safety detail lives in the 2027 GMC Sierra 2500 HD buyers guide, and the rated 2026 truck is in the 2026 buyers guide. Or stop by Beadle Chevrolet GMC at 2200 US Hwy 12 in Mobridge, or call or text 605-845-7277, and we will build the order sheet together.

About the Author

Lexy Tabbert — Beadle Chevrolet, Mobridge, SD

Lexy Tabbert is the Director of Sales and Marketing at Beadle Chevrolet in Mobridge, South Dakota. She covers Chevrolet and GMC vehicles, trim comparisons, and buyer guidance — helping families, ranchers, and ag operators across the region find the right truck and configuration for their needs.

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Quick Answer A 2026 Chevrolet Silverado 3500 HD Crew Cab long bed 4WD dually with the Duramax is rated 31,000 lb on a gooseneck, properly equipped. With a fifth-wheel hitch, Chevrolet sets that truck's combination rating at 32,000 lb, so on a dually the hitch decides the ceiling. The Gooseneck / 5th Wheel Prep Package readies the bed of a 2026 Silverado 3500 HD for either hitch, on single rear wheels or a dually. Two builds show the difference well: a Crew Cab LT on single rear wheels and a High Country dually, both with the Duramax 6.6L Turbo-Diesel V8. The harder question is whether the hitch matters. On a single-rear-wheel truck, hardly. On a dually, it changes the number that caps the whole rig. Here is each hitch, its rating, and two trailers worked against both builds. By Lexy Tabbert, Director of Sales and Marketing, Beadle Chevrolet GMC View Silverado 3500 HD Inventory Get Pre-Qualified Jump to Section Two hitches, two combination ratings The crew cab duallys people actually buy Where the headline number comes from When single rear wheels are enough Why the ball hitch stops at 20,000 lb A hay flatbed and a camper, worked out Matching your hitch to the right rating Common questions Is a Gooseneck Rated the Same as a Fifth Wheel on a Silverado 3500 HD? Not on a dually. Both hitches put the trailer's weight in the bed instead of on the bumper, and on a single-rear-wheel truck Chevrolet publishes one combination rating whichever of the two you use. On a dual-rear-wheel truck with the Duramax, the two hitches get two different combination ratings. The combination rating, or GCWR, is the most the loaded truck and the loaded trailer may weigh together on a scale. It is the number that caps the whole rig, no matter what the trailer rating says. 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Crew Cab long bed dually Gooseneck trailer rating Payload GVWR 2WD, Duramax 31,440 lb 6,023 lb 14,000 lb 4WD, Duramax 31,000 lb 5,716 lb 14,000 lb 4WD High Country, Duramax 30,900 lb 5,378 lb 14,000 lb 4WD, 6.6L gas V8 17,800 lb 6,428 lb 14,000 lb The Duramax rows sit within 540 lb of each other, so pick the drive and trim you need and the rating follows. The High Country gives up a little of each figure to its extra equipment. Every dually shares a 10,400 lb rear axle rating, against 7,250 lb on single rear wheels, and that axle is what carries a gooseneck's pin. The gas row is there for the work truck buyer. A gas dually is a payload truck: it carries the most of any crew cab in the table and is rated lowest on a gooseneck. If the job is towing heavy, the Duramax is the engine. Every row by cab, bed and drive is in the towing section of our 2026 Silverado 3500 HD buyers guide. Where Does the Headline Gooseneck Rating Come From, and Why Isn't It Your Truck? The big number you see in ads belongs to one narrow build. Chevrolet rates a 2026 Silverado 3500 HD Work Truck Regular Cab 2WD long bed dually with the Duramax and the Max Trailering Package at 36,000 lb on a gooseneck, properly equipped. The same Regular Cab truck without Max Trailering is rated 35,500 lb. Max Trailering is only offered on that Work Truck Regular Cab 2WD long bed dually, with the Duramax, 18-inch polished forged wheels and the WT Convenience or WT Fleet Convenience Package. The combination rating on that Regular Cab rises from 43,500 lb to 43,900 lb with it. It does nothing for the ball hitch. If your outfit needs a back seat, four-wheel drive or a High Country interior, the crew cab table above holds your number. That is why we ask for the cab, bed and drive before we quote any rating. When Is a Single-Rear-Wheel 3500 HD Enough for a Bed Hitch? More often than people expect. A Crew Cab long bed 4WD LT on single rear wheels with the Duramax is rated 21,490 lb on a gooseneck and 30,000 lb combined, properly equipped, on a 7,250 lb rear axle and a 12,250 lb GVWR. Payload for that configuration starts from 4,309 lb for a base-equipped truck, and options such as the Z71 package and 20-inch wheels take some of that, so each truck's own door-jamb label has the exact figure. Trim matters here too. A single-rear-wheel High Country of the same configuration is rated 21,200 lb on a gooseneck with 3,924 lb of payload, properly equipped. Fifth-wheel campers tend to carry their weight on the pin, so a luxury single-rear-wheel truck is the one to check most carefully. The single-rear-wheel ceiling is 22,420 lb, on a Regular Cab long bed 2WD Duramax, and the full picture is in what a single-rear-wheel Silverado 3500 HD will pull. Single rear wheels are enough when the pin, crew and gear fit inside the label's payload with room to spare. Why Does the Ball-Hitch Rating Stop at 20,000 lb? Because that is where Chevrolet caps conventional towing on the 2026 Silverado 3500 HD. Every Duramax configuration is rated 20,000 lb on a ball hitch, properly equipped, single rear wheels or dually, with or without Max Trailering. The one exception runs the other way: a single-rear-wheel Regular Cab is rated 14,500 lb with either engine. With the gas V8, conventional ratings run from 16,000 lb on single-rear-wheel crew and Double Cabs to 18,700 lb on a 2WD Crew Cab or Regular Cab dually. A ball hitch carries the tongue behind the rear bumper. A gooseneck or fifth wheel sets the pin in the bed, over the rear axle, which is why the bed-hitch ratings climb past the ball-hitch ceiling and the conventional one does not. Chevrolet's guidance for tongue weight on a ball is 10 to 15 percent of the trailer, and for a gooseneck or fifth-wheel pin it is 15 to 25 percent. So a bumper-pull over 20,000 lb loaded is not a job for any Silverado 3500 HD; that trailer needs a bed hitch. From the Beadle Chevrolet GMC Lot A lot of one-tons around here pull a gooseneck stock trailer in spring and fall and a camper for a week at the lake in summer. When a truck will do both, we work each trailer against its own hitch's rating instead of assuming the gooseneck figure covers the camper. It is a five-minute conversation, and it is the one that most often changes the order. How Do a Hay Flatbed and a Fifth-Wheel Camper Work Out Against Both Trucks? These are illustrations, not ratings or quotes for any truck. Real trailers carry their weight differently, so weigh yours. Trailer A: a 40-foot gooseneck flatbed of round bales, 24,000 lb loaded. That is over the LT's 21,490 lb gooseneck rating, so it is a dually's load. Behind the High Country dually, rated 30,900 lb on a gooseneck, the trailer rating is fine. Now the pin, plus 600 lb for two people and the gear: Pin share Pin weight Plus 600 lb in the truck Against 5,378 lb (High Country dually) 15% 3,600 lb 4,200 lb 1,178 lb to spare 20% 4,800 lb 5,400 lb 22 lb over 25% 6,000 lb 6,600 lb 1,222 lb over The trailer rating says yes, and the payload says it depends on how the bales are stacked. Load the deck so the pin sits near the low end of the range and this rig works; load it nose-heavy and the truck is over payload long before the trailer rating is close. With the truck inside its 14,000 lb GVWR, the whole rig scales well under its gooseneck combination rating. Trailer B: a fifth-wheel camper, 18,000 lb loaded with water and gear. At a 20 percent pin, 3,600 lb sits in the bed, plus 500 lb for two people and the cooler, for 4,100 lb. On the single-rear-wheel LT, that leaves 209 lb against the 4,309 lb base starting point before the LT's own equipment, which means its door-jamb label decides it and the answer is probably no. At 25 percent it is clearly over. Behind the High Country dually, the same 4,100 lb leaves 1,278 lb of its 5,378 lb payload. Then the combination check. Even with the truck loaded right to its 14,000 lb GVWR, this rig would scale 28,400 lb: the truck plus the 14,400 lb still riding on the camper's axles. That is under the 32,000 lb fifth-wheel combination rating. Run that arithmetic at a 20 percent pin with the truck at its full GVWR, and the fifth-wheel combination rating is reached by a 22,500 lb camper. Heavier than that, the dually needs to run lighter, or the trailer belongs on a gooseneck. How to Match Your Hitch to the Right Silverado 3500 HD Rating One trip across a certified scale and a look inside the driver door covers it. Name the hitch first. Ball, gooseneck or fifth wheel. Each one sends you to a different rating, and on a Duramax dually the bed hitches have different combination ratings. Open the driver door. The Trailering Information Label lists that truck's ratings, and the tire and loading label lists what it can carry. Photograph both. Scale the trailer at its heaviest. Full of bales, cattle or water and gear, not the empty weight on its plate. Find the pin load. Scale the truck by itself, then hooked up with only the truck on the platform. The difference is the pin. Without a scale, plan on 25 percent. Total the truck. Pin, people, dogs, tools and fuel, against the label's payload. Total the rig. Truck and trailer on the platform together, against the combination rating for the hitch you named in step one. If any of those totals is within a few hundred pounds of its limit, treat that as a no. Payload is the one most often crowded, and the payload section of our 2026 buyers guide lists every configuration. Gooseneck or Fifth Wheel: Which Hitch Fits Your Operation? A gooseneck is worth it if Skip it for a fifth wheel if You pull stock trailers or flatbeds built as goosenecks Your heaviest trailer runs past 22,500 lb behind a dually You want the highest combination rating a dually carries The truck already has the ball You switch between work trailers through the year Your only trailer is a camper built with a kingpin Your camper stays well under 22,500 lb loaded You would rather not convert a camper's pin box The truck is single rear wheel, where the hitch does not change the rating You tow a few weeks a year, not every week Our Recommendation For a Mobridge-area outfit pulling loaded stock trailers and hay flatbeds over 22,000 lb, we recommend a Crew Cab long bed 4WD dually with the Duramax and a gooseneck hitch: 31,000 lb on a gooseneck and 5,716 lb of payload, properly equipped. For a fifth-wheel camper under 18,000 lb with a moderate pin, the single-rear-wheel Crew Cab rated 21,490 lb is enough, once its door-jamb label clears the pin. Key Takeaways A 2026 Silverado 3500 HD Crew Cab long bed 4WD dually with the Duramax is rated 31,000 lb on a gooseneck, properly equipped; the High Country dually is rated 30,900 lb. On a Duramax dually, the gooseneck hitch carries the higher combination rating; the hitch you choose sets the ceiling for the whole rig. The 36,000 lb headline belongs to a Work Truck Regular Cab 2WD long bed dually with Max Trailering, not to a crew cab. Every Duramax configuration stops at 20,000 lb on a ball hitch; heavier trailers need a bed hitch. A pin of 15 to 25 percent comes out of payload, and the labels in the door jamb are the final word on any individual truck. Common Questions About Gooseneck and Fifth-Wheel Towing With the Silverado 3500 HD Is the combination rating lower with a fifth-wheel hitch on a Silverado 3500 HD dually? Yes, on a 2026 dually with the Duramax. The truck, the people in it and the loaded trailer all count toward the combination rating. Chevrolet sets it at 40,000 lb when the truck pulls with a gooseneck hitch, properly equipped. Pulling with the other bed hitch, the same truck is rated 32,000 lb combined. What is the highest gooseneck rating on a crew cab Silverado 3500 HD? 31,440 lb, on a 2026 Crew Cab long bed 2WD dually with the Duramax, properly equipped. The 4WD version is rated 31,000 lb and the 4WD High Country dually 30,900 lb. Higher figures belong to Regular Cab duallys only. Can a truck with the Gooseneck / 5th Wheel Prep Package take either hitch? The package preps the bed for a gooseneck or a fifth-wheel hitch, and on the 2026 Silverado 3500 HD it includes a spray-on bedliner. The hitch itself is added on top of it. How much of a gooseneck or fifth-wheel trailer sits on the truck? Chevrolet's guidance is 15 to 25 percent of the loaded trailer's weight. That pin load comes out of the truck's payload along with the people and gear, so a trailer can be under its rating and still put the truck over payload. Weigh it to be sure. Quick Answers What is the ball-hitch limit on a Duramax Silverado 3500 HD? 20,000 lb on every Duramax configuration except the single-rear-wheel Regular Cab, properly equipped. Does the Max Trailering Package raise the ball-hitch rating? No, it raises the Regular Cab dually's gooseneck rating and leaves the ball hitch at 20,000 lb. What is the combination rating on a single-rear-wheel Duramax? 30,000 lb, properly equipped, whichever bed hitch you use. What about the gas V8? 26,000 lb combined, and a gas 4WD Crew Cab dually is rated 17,800 lb on a gooseneck. Is every Silverado 3500 HD dually a long bed? Yes, every one is a long bed with a 14,000 lb GVWR. What is the rear axle rating on a dually? 10,400 lb, against 7,250 lb on single rear wheels. What is the single-rear-wheel gooseneck ceiling? 22,420 lb on a Regular Cab long bed 2WD with the Duramax, properly equipped. Where are one truck's exact ratings? On the Trailering Information Label in that truck's driver door jamb. Keep Researching For every gooseneck, conventional and combination rating by cab, bed and drive, read the towing section of the 2026 Chevrolet Silverado 3500 HD buyers guide. Single rear wheel or dually? The 2026 Silverado 3500 HD, side by side The single-rear-wheel Silverado 3500 HD: what it will pull The Chevrolet Silverado 3500 HD at Beadle Chevrolet GMC: trims, ratings and inventory My Take on Picking the Hitch Before the Truck I would rather talk about your hitch before we talk about trim, because on a dually it decides which rating you are actually living with. Most people know their trailer's weight. Fewer know that the same truck carries two different combination ratings depending on what sits in the bed, and that is the gap where a good truck ends up overloaded. Around Mobridge, a lot of rigs do double duty: cattle to the sale barn in the fall, a camper out to Lake Oahe in July. If that is you, bring both trailers' weights and we will run them against the ratings. The towing ratings in our 2026 Silverado 3500 HD buyers guide are there if you want to check the math first. Call or text us at 605-845-7277, or stop by 2200 US Hwy 12 and we will work it out together. Lexy Tabbert, Director of Sales and Marketing Beadle Chevrolet GMC, Mobridge, SD View Silverado 3500 HD Inventory Get Pre-Qualified Call or Text 605-845-7277 With Your Trailer Weights About the Author Lexy Tabbert — Beadle Chevrolet, Mobridge, SD Lexy Tabbert is the Director of Sales and Marketing at Beadle Chevrolet in Mobridge, South Dakota. She covers Chevrolet and GMC vehicles, trim comparisons, and buyer guidance — helping families, ranchers, and ag operators across the region find the right truck and configuration for their needs. Learn more about Lexy.

Silverado 3500 HD LT with single rear wheels pulling a gooseneck stock trailer on a gravel road near Mobridge, South Dakota

The Single-Rear-Wheel Silverado 3500 HD: What It Will Pull, and Who Should Buy One

Quick Answer A 2026 Chevrolet Silverado 3500 HD Crew Cab long bed 4WD with single rear wheels and the Duramax is rated 20,000 lb on a ball hitch and 21,490 lb on a gooseneck, properly equipped. Payload for that configuration starts from 4,309 lb; the door-jamb label gives the exact figure. Most one-ton conversations at our desk start with the word dually. A good share of them should not. A 2026 Silverado 3500 HD LT on single rear wheels and a High Country dually can share the same cab, bed, drive and engine, built two different ways. This post is about the first truck: what it is rated to pull, where the single-rear-wheel ceiling sits, what equipment does to payload, and when to move to the dually instead. By Lexy Tabbert, Director of Sales and Marketing, Beadle Chevrolet GMC View Silverado 3500 HD Inventory Get Pre-Qualified Jump to Section The truck, by configuration What it is rated for Telling a dually from a listing The single-rear-wheel ceiling Why it can have a Z71 and a dually cannot Who should buy single rear wheels Bale beds, flatbeds and plows Check your trailer against it What Exactly Is a Single-Rear-Wheel Silverado 3500 HD Crew Cab? Configuration first, because every rating depends on it. The truck in this post is a 2026 Silverado 3500 HD LT, Crew Cab, long bed, four-wheel drive, single rear wheels, with the Duramax 6.6L Turbo-Diesel V8 and the 10-speed automatic. Its options include the Z71 Off-Road Package, 20-inch wheels and the gooseneck and fifth-wheel prep package. That is the one-ton a lot of outfits around Mobridge actually run: a crew cab for the family, a long bed with a ball for the stock trailer, four-wheel drive for the yard in March, and a body still 81.85 in wide. The Duramax is rated 470 hp and 975 lb-ft. If you are still deciding between it and the dually, our single rear wheel or dually comparison runs that decision start to finish. Here we stay with the single-rear-wheel truck. What Is a Single-Rear-Wheel Silverado 3500 HD Rated For? For a 2026 Silverado 3500 HD Crew Cab long bed 4WD with single rear wheels, Chevrolet rates the two engines as follows, properly equipped. Crew Cab long bed 4WD, single rear wheel Duramax diesel 6.6L gas V8 Conventional (ball hitch) 20,000 lb 16,000 lb Gooseneck 21,490 lb 18,230 lb GVWR 12,250 lb 11,700 lb Combination rating (GCWR) 30,000 lb 26,000 lb Rear axle rating 7,250 lb 7,250 lb Payload, base configuration starts from 4,309 lb starts from 4,472 lb The payload row needs the most care. Those figures are for a base-equipped truck, and every factory option comes out of them. An LT with the Z71 Off-Road Package, 20-inch wheels and tires, the gooseneck prep and a long list of comfort equipment has a payload lower than 4,309 lb. Its exact figure is on the label in its driver door jamb, the final word on any individual truck. For reference, a single-rear-wheel High Country of the same configuration has its own published figures: 3,924 lb of payload and 21,200 lb on a gooseneck with the Duramax, properly equipped. Full tables by cab and bed are in the towing section of the 2026 Silverado 3500 HD buyers guide. How to read the door-jamb label Open the driver door and look at the B-pillar. The tire and loading label states the most the occupants and cargo may weigh combined; that is this truck's payload as built. The Trailering Information Label on the same door jamb lists the truck's trailer and tongue weight ratings. Take a photo of both before you sign anything, and run your trailer against them, not against a brochure. Can You Tell From a Listing Whether a Silverado 3500 HD Is a Dually? Not from the headline. "Silverado 3500 HD LT Crew Cab long bed 4WD" describes a single-rear-wheel truck and a dually equally well, and a front three-quarter photo can hide the rear fenders. Four things in a listing settle it. The equipment list. Look for the words "single rear wheels" or "dual rear wheels". The GVWR. Every 2026 Silverado 3500 HD dually carries a 14,000 lb GVWR. A single-rear-wheel truck tops out at 12,250 lb. The wheels and tires. A dually rides on LT235/80R17E or LT235/80R18 tires. Any 20-inch wheel means single rear wheels, because Chevrolet does not offer one on a dually. The bed. A dually is always a long bed. A Crew Cab standard bed is a single-rear-wheel truck every time. If none of those are listed, call or text before you drive over; 14.90 in of extra width is a bad surprise in a parking lot. What Is the Most a Single-Rear-Wheel Silverado 3500 HD Can Pull? 22,420 lb on a gooseneck, on a 2026 Silverado 3500 HD Regular Cab long bed 2WD with single rear wheels and the Duramax, properly equipped. That is the single-rear-wheel ceiling, and it belongs to the lightest single-rear-wheel truck in the lineup, not the fanciest. The same Regular Cab is also the exception on a ball hitch: a single-rear-wheel Regular Cab is rated 14,500 lb conventional with either engine, where every other single-rear-wheel Duramax configuration reaches 20,000 lb. So the truck with the best gooseneck number has the worst bumper-pull number. If you pull both kinds of trailer, that matters. For a crew cab, the best single-rear-wheel gooseneck rating is 22,070 lb, on a Crew Cab long bed 2WD Duramax. The best four-wheel-drive Crew Cab is 21,600 lb, on the standard bed. A long bed 4WD sits at 21,490 lb, properly equipped. The spread across every single-rear-wheel Duramax crew cab, High Country included, is 870 lb, so the cab and drive you need should decide the truck, not the rating. One more line worth knowing if you are pricing the gas engine. On a Crew Cab long bed 4WD, the gas dually's gooseneck rating, 17,800 lb, is lower than the gas single-rear-wheel truck's 18,230 lb, properly equipped. A gas dually earns its keep in payload, not in trailer rating. Why Can a Single-Rear-Wheel 3500 HD Have a Z71 When a Dually Cannot? Because Chevrolet does not offer the Z71 Off-Road Package with dual rear wheels on any trim. The same goes for 20-inch wheels, the Trail Boss Package, the Midnight Edition and the Stars and Steel editions. If you want the off-road equipment or the bigger wheel on a one-ton, you are buying single rear wheels. Two builds show the rule. An LT with the Z71 package and the 20-inch wheels is a single-rear-wheel truck. A High Country dually has neither and rides on 18-inch polished forged wheels, but it keeps the leather, the head-up display, the power sunroof and the gooseneck prep. The full list of what a dually can and cannot be ordered with is in what a 2026 Silverado dually gives up, and what it keeps. Who Should Buy Single Rear Wheels, and Who Should Not? The decision comes down to kingpin weight against payload, not the tow rating. Chevrolet recommends a gooseneck or fifth-wheel kingpin load of 15 to 25 percent of the trailer's weight, and a tongue load of 10 to 15 percent on a ball hitch. All of that sits in the bed and comes out of payload before anyone climbs in. Here is an illustration, not a quote for any truck. Say your loaded gooseneck stock trailer scales at 15,000 lb. At 15 percent, 2,250 lb rides on the ball; at 25 percent, 3,750 lb. Add 500 lb for two people, a dog and the gear in the back seat, and you need between 2,750 and 4,250 lb of payload. The low end fits a single-rear-wheel Crew Cab easily. The high end runs right up against the 4,309 lb base figure, and an equipped truck has less than that. That trailer, loaded heavy on the pin, is a dually's job; a High Country dually is rated for 5,378 lb of payload, properly equipped. Run the same arithmetic on a 10,000 lb bumper-pull: 1,000 to 1,500 lb on the tongue, comfortable inside a single-rear-wheel truck's payload with room for the crew. Single rear wheels are worth it if Skip them for a dually if Your kingpin plus cab load fits inside the door-jamb payload with margin On the Duramax, you pull bumper trailers up to 20,000 lb and goosenecks under 21,490 lb The truck is also the daily driver, school run and parts run Your shop door, car wash or fuel island is tight at 96.75 in You want the Z71 package or a 20-inch wheel Your loaded kingpin runs 3,500 lb or more You haul a loaded gooseneck near the rating every week You want the 10,400 lb rear axle rating and 14,000 lb GVWR You run a living-quarters or toy-hauler fifth wheel with a heavy pin You haul for hire and want the margin on paper From the Beadle Chevrolet GMC Lot The question we hear most about this truck is whether it will pull a gooseneck. On paper it almost always will. The conversation that actually decides it is how much of that trailer ends up on the pin, and that is a payload question. We would rather open the door, read the label with you and run your trailer against it than have you guess from a headline. What Does a Bale Bed, Flatbed or Plow Do to the Arithmetic? It takes from the same pile. A toolbox, a transfer tank, a plow, or a bale bed or flatbed in place of the box all count against payload before the trailer's kingpin does, and that equipment never comes off. The door-jamb label describes the truck as built. Once you bolt equipment on, a scale ticket of the truck as you will run it, full of fuel, against the GVWR on the label tells you what is left. Chevrolet offers snow plow prep from the factory, and a plow sits out front on the front axle, so ask us to check the front axle rating on the specific truck too. Body weights vary by builder, so we do not publish them here. If a bale bed or flatbed is in your plan, bring the body maker's published weight to the desk and we will work through what the truck has left. How to Check Your Trailer Against a Single-Rear-Wheel 3500 HD Five steps, about fifteen minutes with a scale ticket in hand. Weigh the trailer loaded. Use the heaviest load you actually haul, at the sale barn scale or the elevator, not the empty weight on the trailer's plate. Work out the pin or tongue load. Take 15 to 25 percent for a gooseneck or fifth wheel, 10 to 15 percent for a bumper-pull, and plan from the top of the range. Add everything else in the truck. People, dogs, tools, mineral tubs, a toolbox or transfer tank, and any body or plow. Compare against the door-jamb payload. Read the label on the exact truck. If the total is over it, or within a few hundred pounds, look at the dually. Check the trailer rating and the GCWR. 21,490 lb gooseneck and 30,000 lb combined on a Crew Cab long bed 4WD Duramax, properly equipped. Or bring the trailer to 2200 US Hwy 12. We will read both labels with you and tell you plainly if the dually is the better buy. Our Recommendation For a Mobridge-area cow-calf operation pulling a gooseneck stock trailer that scales 15,000 lb or less loaded, we recommend the single-rear-wheel Silverado 3500 HD Crew Cab long bed 4WD Duramax: 21,490 lb on a gooseneck and 20,000 lb on a ball, properly equipped, in a body 14.90 in narrower than the dually. Once the pin load plus the crew crowds the payload on the label, step over to the dually. Key Takeaways A 2026 Silverado 3500 HD Crew Cab long bed 4WD with single rear wheels and the Duramax is rated 20,000 lb conventional and 21,490 lb gooseneck, properly equipped. Payload for that configuration starts from 4,309 lb with the Duramax; options such as the Z71 package and 20-inch wheels reduce it, and the door-jamb label gives the exact figure. The single-rear-wheel ceiling is 22,420 lb on a gooseneck, on a Regular Cab long bed 2WD Duramax; the best crew cab is 22,070 lb. Kingpin load of 15 to 25 percent of the trailer, plus everything else in the truck, decides single rear wheels or dually. Z71, Trail Boss, Midnight Edition, Stars and Steel and every 20-inch wheel are single-rear-wheel only. Frequently Asked Questions How much can a single-rear-wheel 2026 Silverado 3500 HD tow? A Crew Cab long bed 4WD with single rear wheels and the Duramax is rated 20,000 lb on a ball hitch and 21,490 lb on a gooseneck, properly equipped. With the gas V8 the same truck is rated 16,000 lb and 18,230 lb. The trailering label in the door jamb is the final word on any individual truck. What is the payload of a single-rear-wheel Silverado 3500 HD LT? Chevrolet rates the Crew Cab long bed 4WD single-rear-wheel configuration from 4,309 lb with the Duramax and from 4,472 lb with the gas V8, base equipped. An LT's options reduce that, so its exact payload is on the tire and loading label in its driver door jamb. What is the most a single-rear-wheel Silverado 3500 HD can pull on a gooseneck? 22,420 lb, properly equipped, on a Regular Cab long bed 2WD with the Duramax. The best single-rear-wheel crew cab is a Crew Cab long bed 2WD Duramax at 22,070 lb, and the best four-wheel-drive crew cab is the standard bed at 21,600 lb. How can I tell from a listing whether a Silverado 3500 HD is a dually? Look for "dual rear wheels" in the equipment list and a 14,000 lb GVWR, which every 2026 Silverado 3500 HD dually carries. A single-rear-wheel truck tops out at 12,250 lb, and any 20-inch wheel or a Crew Cab standard bed means single rear wheels. Quick Answers How wide is a single-rear-wheel Silverado 3500 HD Crew Cab? 81.85 in at the body, without mirrors, against 96.75 in for a dually. What is the rear axle rating on single rear wheels? 7,250 lb, against 10,400 lb on a dually. What is the GCWR of a single-rear-wheel Duramax? 30,000 lb, properly equipped; 26,000 lb with the gas V8. Does the Max Trailering Package raise the single-rear-wheel rating? No, it is offered only on a Work Truck Regular Cab 2WD long bed dually with the Duramax. Can a single-rear-wheel 3500 HD have the Z71 Off-Road Package? Yes; a dually cannot. Is rear ground clearance better on single rear wheels? Yes, 11.14 in on a Crew Cab long bed against 10.39 in on the dually. How much kingpin weight should I plan for? 15 to 25 percent of the loaded trailer's weight. Where is the final answer for one specific truck? The labels in that truck's driver door jamb. Keep Researching For every single-rear-wheel and dually rating side by side, read the single-rear-wheel section of the 2026 Silverado 3500 HD buyers guide. Single rear wheel or dually? The 2026 Silverado 3500 HD, side by side Can you get a Z71 Silverado 3500 HD dually? What a 2026 dually gives up, and what it keeps Silverado 3500 HD or Sierra 3500 HD? Where the numbers actually differ My Take on the Single-Rear-Wheel One-Ton I think the single-rear-wheel 3500 HD is the most underrated truck in the lineup. People hear one-ton and picture a dually, but a lot of the trailers around Mobridge, from the stock trailer headed to the sale barn to the boat going to Lake Oahe, fit comfortably inside what this truck is rated for, and it is a far easier truck to live with on US 12, in town and in the shop. Where I push people toward the dually is when the pin weight and the crew start crowding the payload on the label. That is arithmetic, not a sales pitch, and I would rather show you the math than have you find it at a scale. The single-rear-wheel section of our 2026 buyers guide has every rating if you want to check us. Call or text us at 605-845-7277, or bring the trailer to 2200 US Hwy 12 in Mobridge. Lexy Tabbert, Director of Sales and Marketing Beadle Chevrolet GMC, Mobridge, SD View Silverado 3500 HD Inventory Get Pre-Qualified Bring Us Your Trailer About the Author Lexy Tabbert — Beadle Chevrolet, Mobridge, SD Lexy Tabbert is the Director of Sales and Marketing at Beadle Chevrolet in Mobridge, South Dakota. She covers Chevrolet and GMC vehicles, trim comparisons, and buyer guidance — helping families, ranchers, and ag operators across the region find the right truck and configuration for their needs. Learn more about Lexy.

Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD side by side at Beadle Chevrolet GMC in Mobridge, South Dakota

Silverado 3500 HD or Sierra 3500 HD? Two One-Tons on One Lot, and Where the Numbers Actually Differ

Quick Answer The 2026 Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD share engines, the 20,000 lb ball-hitch ceiling and most towing ratings. They differ on a few figures, length and trims: a Silverado High Country dually is rated 30,900 lb on a gooseneck, a Sierra Denali dually 30,800 lb, properly equipped. We sell both trucks from the same building at 2200 US Hwy 12, so this is one comparison we can write without a side to take. The common line is that they are the same truck with a different grille. That is close, and not quite true. Here is where the 2026 numbers match, where they do not, and what actually separates the two. By Lexy Tabbert, Director of Sales and Marketing, Beadle Chevrolet GMC View Silverado 3500 HD Inventory View Sierra 3500 HD Inventory Jump to Section Same platform, not the same numbers Where the two trucks are identical Where they differ, configuration by configuration The trim ladders do not line up Same paint, different name Multi-Flex and the GMC tailgate How to compare them in one afternoon Are the Silverado 3500 HD and Sierra 3500 HD the Same Truck? Underneath, very nearly. Both are 2026 General Motors one-tons with the same two engines, the same 10-speed automatic, the same rear axle ratings and the same dually rule: dual rear wheels always come with a long bed and a 14,000 lb GVWR. Where they part ways is in the details. The front-end sheet metal differs, so overall length differs on every cab. The top trims carry different equipment, so their ratings land a little apart. And the two brands build different trim ladders on the same bones, which decides more purchases at our desk than any rating does. So the honest framing is this: the Silverado 3500 HD and Sierra 3500 HD match on the ratings that set your ceiling, and differ by tens or hundreds of pounds on a few specific configurations. If you want the full Chevrolet side of every table, the comparison section of the 2026 Silverado 3500 HD buyers guide has it. The GMC side of the same story is in the dually section of the 2026 Sierra 3500 HD guide. Where Are the Two Trucks Identical? On the numbers that set a working rig's limits. Every figure below is the same for both 2026 trucks, properly equipped. Item Both trucks 6.6L gas V8 401 hp, 464 lb-ft, 10-speed automatic Duramax 6.6L Turbo-Diesel V8 470 hp, 975 lb-ft, 10-speed automatic Ball-hitch ceiling, Duramax 20,000 lb (Regular Cab single rear wheel: 14,500 lb) Crew Cab long bed 4WD dually, Duramax, gooseneck 31,000 lb Crew Cab long bed 2WD dually, Duramax, gooseneck 31,440 lb Combination rating (GCWR) 26,000 lb gas; 30,000 lb Duramax single rear wheel GVWR 14,000 lb on every dually; single rear wheel tops out at 12,250 lb Rear axle rating 7,250 lb single rear wheel; 10,400 lb dually The big combination numbers match too. A Duramax dually from either brand is rated for a 40,000 lb combination with a gooseneck hitch, properly equipped. Hitch type changes it. With a fifth-wheel hitch, both brands rate the same dually at a 32,000 lb combination. The headline belongs to the same truck on each side as well: a 2WD Regular Cab long bed dually with the Duramax is rated 35,500 lb on a gooseneck, and 36,000 lb on a Regular Cab with the Max Trailering Package, which on the Chevrolet side is a Work Truck-only option. Neither brand sells that number on a Crew Cab. The dually wheel menus match as well: a 17-inch painted steel wheel with LT235/80R17E tires or an 18-inch polished forged aluminum wheel with LT235/80R18 tires, the forged wheel standard on both the High Country and the Denali dually. Where Do the Silverado and Sierra 3500 HD Numbers Differ? On these configurations, properly equipped. The Sierra column is GMC's figure for the matching truck; payload rows are base-configuration figures, and the door-jamb label is the final word on any individual truck. Configuration Silverado 3500 HD Sierra 3500 HD Top-trim Crew Cab long bed 4WD dually, Duramax, gooseneck 30,900 lb (High Country) 30,800 lb (Denali) Crew Cab long bed 4WD single rear wheel, Duramax, gooseneck 21,490 lb 21,460 lb Crew Cab long bed 2WD dually, gas, ball hitch 18,700 lb 18,200 lb Crew Cab long bed 2WD dually payload, gas 6,735 lb 6,658 lb Crew Cab long bed 4WD dually payload, gas 6,428 lb 6,378 lb Crew Cab long bed 4WD dually payload, Duramax 5,716 lb 5,647 lb Regular Cab 2WD dually payload, Duramax 6,644 lb 6,584 lb Overall length, Crew Cab long bed 266.06 in 266.77 in Body width, dually (without mirrors) 96.75 in 96.62 in Body width, Regular Cab single rear wheel 81.75 in 81.85 in Read that table for what it is: small. The largest gap is 500 lb, on a gas 2WD dually pulling a bumper trailer, and the Crew Cab long bed 4WD Duramax dually most ranchers here would order carries 69 lb more payload as a Silverado. Nobody should switch badges over 69 lb. The gap matters only when your rig already sits at a limit. The Silverado is 0.7 to 0.8 in shorter on every cab. The Sierra also offers a Denali Ultimate dually, rated 30,700 lb on a gooseneck, properly equipped, and it comes only with the Duramax; every Silverado trim offers both engines. Use the right brand's number The most common mistake we see is a Sierra figure quoted for a Silverado, or the reverse, because someone said they are the same truck. Usually the number matches. On a top-trim dually, a gas dually or a payload figure it may not. Use the brand you are buying, then confirm it on the trailering label in that truck's driver door jamb. Why Don't the Trim Ladders Line Up? Because Chevrolet and GMC slice the same truck differently. The Silverado 3500 HD comes in four trims: Work Truck, LT, LTZ and High Country. Every one of the four can be ordered as a dually. There is no Custom and no ZR2 on the 3500 HD, even though both exist on the Silverado 2500 HD. The Sierra 3500 HD comes in six: Pro, SLE, SLT, AT4, Denali and Denali Ultimate. Five of them can be duallys. The AT4 cannot; it is a single-rear-wheel truck only. On both brands, two-wheel drive belongs to the base trim, so a 2WD fleet order is a Silverado Work Truck or a Sierra Pro. The off-road story runs the same way on both sides of the lot. Chevrolet does not offer the Z71 Off-Road Package with dual rear wheels, and GMC's off-road package is single-rear-wheel only as well. The Silverado adds three names the Sierra has no equivalent for: the Trail Boss Package, the Midnight Edition on the High Country, and the Stars and Steel editions new for 2026. All three are single-rear-wheel only. What that means at the desk: if you want a top-trim dually, both brands will build one. If you want the off-road look, you are buying single rear wheels on either badge. An LT with the Z71 Off-Road Package and 20-inch wheels is a single-rear-wheel truck; a High Country dually has neither, and still has leather, a head-up display and a power sunroof. More on that in what a 2026 Silverado dually gives up, and what it keeps. Do Chevrolet and GMC Use the Same Paint? Several colors are the same paint sold under two names. If a blue Silverado High Country and a blue Sierra Denali look identical to you, this is why. Chevrolet name GMC name Worth knowing Lakeshore Blue Metallic Downpour Metallic Every Silverado trim; on the Sierra not offered on SLE, SLT or AT4 Polar White Tricoat Glacier White Tricoat High Country only, new for 2026; SLT, Denali and Denali Ultimate on the Sierra Radiant Red Tintcoat Volcanic Red Tintcoat LTZ and High Country; SLT and AT4 on the Sierra Red Hot Cardinal Red Work Truck and LT; Pro and SLE on the Sierra Sterling Gray Metallic Sterling Metallic All trims on both Black Onyx Black All trims on both Summit White carries the same name on both. Cypress Gray, offered on the LT and LTZ, has no Sierra 3500 HD counterpart, and GMC's Coastal Dune and Titanium Rush Metallic have none on the Silverado 3500 HD color list. If a color decides it for you, check the trim first. How Does the Multi-Flex Tailgate Compare With the GMC Tailgate? Both brands sell a multi-function tailgate with different defaults. The Silverado's Multi-Flex tailgate is available on all four trims with prerequisites, dually included, but not together with the power up/down tailgate that is standard on the High Country. GMC's six-function tailgate is standard on the Sierra AT4, Denali and Denali Ultimate and available on the Pro, SLE and SLT. If that gate is a must-have on a top trim, the default is a real difference between a High Country and a Denali. The Multi-Flex positions are covered in our Silverado HD Multi-Flex tailgate guide; the gate is the same idea on the 3500 HD. Which One Fits Your Operation? The Silverado 3500 HD is worth it if Skip it for the Sierra 3500 HD if You want a four-trim ladder where every trim can be a dually You want Trail Boss, Midnight Edition or Stars and Steel on single rear wheels You want Cypress Gray or Polar White Tricoat by name Every inch of length counts in your shop You want six trims to choose from, including the Denali Ultimate You want a multi-function tailgate standard on the top trim You want the AT4's off-road styling on single rear wheels You simply prefer the GMC cab and front end From the Beadle Chevrolet GMC Lot When someone is standing between the two, the question we hear most is which one is the stronger truck. On the ratings, neither is in any way that would change what you hook to it. The decision usually gets made inside the cab: which seat, which screen layout, which trim has the equipment you want at the price you want. We would rather you sit in both than read either brochure. How to Compare a Silverado and a Sierra 3500 HD in One Afternoon Both are sold from one showroom in Mobridge, so this takes one visit. Settle the configuration first. Cab, bed, 2WD or 4WD, single or dual rear wheels, gas or Duramax. That sets your ratings on both brands before trim enters the picture. Pull the right brand's figure. Use the Silverado table for a Silverado and the Sierra table for a Sierra, especially on a top-trim dually or a payload number. Match trims by equipment, not by rank. An LTZ is not automatically an SLT. List the five things you want and see which trim on each side carries them. Sit in both and drive both. Only a test drive settles seats, screen and visibility. Read both door-jamb labels. The trailering label on each individual truck is the final word, whatever any chart says, including ours. When this was written, the GMC side of our lot included a Sierra 3500 HD SLT dually alongside the Silverado High Country dually. Stock changes; call or text 605-845-7277 and we will have the trucks you want pulled up together. Our Recommendation For a Mobridge buyer choosing between a Silverado 3500 HD and a Sierra 3500 HD Crew Cab long bed 4WD Duramax dually, we recommend deciding on cab, trim and equipment, not on the ratings. Both base configurations are rated 31,000 lb on a gooseneck, properly equipped, and the top trims sit 100 lb apart at 30,900 lb and 30,800 lb. If you live at the ceiling, order a plainer trim of either badge rather than the top one. Key Takeaways The 2026 Silverado 3500 HD and Sierra 3500 HD share both engines, the 20,000 lb ball-hitch ceiling, the 14,000 lb dually GVWR and the 10,400 lb dually rear axle rating. A Crew Cab long bed 4WD Duramax dually is rated 31,000 lb on a gooseneck as either brand, properly equipped; the High Country dually is rated 30,900 lb and the Denali dually 30,800 lb. The differences are small and specific: a few payload and gas towing rows, 0.7 to 0.8 in of length on every cab, and 0.13 in of dually width. All four Silverado trims can be duallys; five of six Sierra trims can, and the AT4 cannot. Quote the brand you are buying, and confirm it on the trailering label in that truck's door jamb. Frequently Asked Questions Is the 2026 Silverado 3500 HD the same truck as the Sierra 3500 HD? They share a platform, both engines, the 20,000 lb ball-hitch ceiling, the 14,000 lb dually GVWR and most towing ratings. They are not identical: a few payload and towing figures differ, the Silverado is 0.7 to 0.8 in shorter on every cab, and the trim ladders are different. Which tows more on a gooseneck, a Silverado 3500 HD High Country dually or a Sierra 3500 HD Denali dually? As a Crew Cab long bed 4WD dually with the Duramax, the High Country is rated 30,900 lb and the Denali 30,800 lb, properly equipped. The 100 lb gap will not change what either truck can pull in practice; check the door-jamb label on the exact truck. Can every Silverado 3500 HD trim be a dually? Yes. Work Truck, LT, LTZ and High Country can all be ordered with dual rear wheels, always with a long bed and a 14,000 lb GVWR. On the Sierra 3500 HD, five of six trims can be duallys; the AT4 is single rear wheel only. Do the Silverado 3500 HD and Sierra 3500 HD use the same engines? Yes. Both offer a 6.6L gas V8 rated 401 hp and 464 lb-ft and the Duramax 6.6L Turbo-Diesel V8 rated 470 hp and 975 lb-ft, each with a 10-speed automatic. Every Silverado trim offers both engines; the Sierra Denali Ultimate comes only with the Duramax. Quick Answers Is a Silverado 3500 HD dually wider than a Sierra dually? By 0.13 in: 96.75 in against 96.62 in, without mirrors. Which is longer? The Sierra, by 0.7 to 0.8 in on every cab. Do both have a 40,000 lb combination rating? Yes, on a Duramax dually with a gooseneck hitch, properly equipped. What about with a fifth-wheel hitch? Both brands rate the same dually at a 32,000 lb combination. Can I get a Z71 dually? No, Chevrolet does not offer the Z71 Off-Road Package with dual rear wheels on any trim. Is Lakeshore Blue Metallic the same as Downpour Metallic? Yes, it is the same paint under the Chevrolet and GMC names. Does the Silverado have a Custom or ZR2 on the 3500 HD? No, the 3500 HD comes as Work Truck, LT, LTZ or High Country. Where is the final answer for one specific truck? The trailering label in that truck's driver door jamb. Keep Researching For every Silverado 3500 HD rating by cab, bed and drive in one place, read the 2026 Chevrolet Silverado 3500 HD buyers guide. Single rear wheel or dually? The 2026 Silverado 3500 HD, side by side Can you get a Z71 Silverado 3500 HD dually? What a 2026 dually gives up, and what it keeps The GMC side: dual rear wheels on the 2026 Sierra 3500 HD My Take on Silverado vs Sierra Selling both badges from one store means I have no reason to talk anyone out of either. People walk in expecting a big difference in capability, and there is not one. The real differences are the trim ladder, the cab, a few paint names and a handful of figures you only need at the limit. Decide the configuration on your trailer, using the right brand's numbers, then spend your time in the seats. Around Mobridge these trucks put in long days on US 12 and gravel section lines, and the cab you like on day one is the one you will still like years later. The comparison section of our 2026 Silverado 3500 HD buyers guide is a good place to start. Call or text us at 605-845-7277, or stop by 2200 US Hwy 12 in Mobridge and we will put a Silverado and a Sierra side by side for you. Lexy Tabbert, Director of Sales and Marketing Beadle Chevrolet GMC, Mobridge, SD View Silverado 3500 HD Inventory Get Pre-Qualified Ask Us About Both Trucks About the Author Lexy Tabbert — Beadle Chevrolet, Mobridge, SD Lexy Tabbert is the Director of Sales and Marketing at Beadle Chevrolet in Mobridge, South Dakota. She covers Chevrolet and GMC vehicles, trim comparisons, and buyer guidance — helping families, ranchers, and ag operators across the region find the right truck and configuration for their needs. Learn more about Lexy.