If you came here for a 2027 GMC Sierra 2500 HD towing number, here is the honest answer first: GM has not published one. The 2027 ordering information we work from has no trailer ratings, no payload, and no GCWR; those will come in the 2027 GM Trailering Guide. What it does publish is the GVWR menu, and that menu moved: the top rating is now 12,300 pounds on a Crew Cab long bed 4WD Duramax with the Max Trailering Package, up from 11,900 pounds on the 2026 truck. It also confirms that the package itself is unchanged and that every 2027 truck already wears the 18-inch-or-larger wheels the package requires. This post covers what that GVWR number does and does not tell a rancher, what the Max Trailering Package still requires, and how to write a 2027 order so the rating lands where you need it. For the truck with numbers on it today, the rated 2026 truck on our lot is the one to plan a trailer around, and the 2026 gooseneck stock-trailer post works the math in full. 2. TOP CTA View Sierra 2500 HD Inventory Get Pre-Qualified 3. ON THIS PAGE On This Page Straight answer: 2027 trailer ratings are not published yet What is published: GVWR from 10,000 to 12,300 pounds GVWR vs GCWR vs trailer rating, with a stock-trailer example Max Trailering for 2027: same hardware, same rules The 18-inch rule Standard trailering gear on every 2027 trim How to spec a 2027 order so the rating lands where you need it 4. CONTENT SECTIONS How Much Can the 2027 Sierra 2500 HD Tow? Nobody can tell you yet, and anyone who prints a 2027 figure this fall is guessing. The 2027 ordering information lists the trims, engines, packages, wheels, and GVWR codes, and stops there; the trailering and specifications pages that carried the 2026 ratings are not in it. GM publishes trailer ratings in its Trailering Guide, and the 2027 edition has not been released. Two things make us unwilling to assume the 2026 numbers carry over. The engine codes changed, from L8T to L8S on the gas V8 with direct injection and variable valve timing and from L5P to L6P on the Duramax turbo-diesel V8, B20-compatible, with the Allison 10-speed automatic behind each. And the GVWR ceiling moved up. Either one can shift a trailer rating, so until GM prints the 2027 tables, the 2027 truck is unrated in our showroom; the what's new for 2027 post covers the engine-code change. The rated truck is the 2026. For the 2026 model year GM rates the Sierra 2500 HD at up to 20,000 pounds conventional and 22,390 pounds gooseneck, properly equipped, and the 2026 Crew Cab long bed 4WD Duramax most ranchers here order is rated at 19,000 pounds gooseneck, or 21,500 pounds with the Max Trailering Package. Those 2026 figures, by configuration, are in the 2026 buyers guide linked above, and the trailering information label in the driver door jamb of any truck, 2026 or 2027, is the final word for that specific unit. What Does the 2027 Guide Actually Publish? The GVWR Menu GVWR, from 10,000 to 12,300 pounds, is the one 2027 capability number GM has printed. The rating rises with cab, drive, engine, and the Max Trailering Package, and the three highest codes, 12,000, 12,150, and 12,300 pounds, are new for 2027 and belong to diesel Crew Cabs. The table lists the 4WD configurations our buyers order plus the Regular Cab; the 2027 Sierra 2500 HD buyers guide carries the full menu. 2027 Sierra 2500 HD configuration GVWR, gas V8 GVWR, Duramax GVWR, Duramax + Max Trailering Crew Cab long bed 4WD 11,350 lb 12,000 lb 12,300 lb (2027 maximum) Crew Cab standard bed 4WD 10,900 lb 11,600 lb 12,150 lb AT4X (Crew Cab standard bed 4WD) 11,150 lb 11,750 lb not offered Double Cab long bed 4WD 11,200 lb 11,900 lb not offered Double Cab standard bed 4WD 10,900 lb 11,600 lb not offered Regular Cab long bed 4WD 10,950 lb 11,400 lb 11,900 lb Regular Cab long bed 2WD 10,650 lb 11,200 lb 11,600 lb The 2WD Crew and Double Cab gas trucks sit lower, 10,850 pounds for a Crew Cab standard bed, 11,000 for a Crew Cab long bed, 10,750 and 10,900 for the Double Cabs, and the lowered 10,000-pound GVWR option is still available on every trim except the AT4 and AT4X for buyers who need to stay under a licensing threshold; it reduces towing and payload, so ask us before ordering it. The AT4X moves up too: 11,150 gas and 11,750 diesel, against 11,025 and 11,350 on the 2026 AT4X. Read the table for what it is. A higher GVWR usually means more room for payload, but payload is GVWR minus curb weight, and 2027 curb weights are not published either. We will not subtract a 2026 curb weight from a 2027 GVWR and call the result a payload. GVWR vs GCWR vs Trailer Rating: What Does Each One Limit? Three ratings, three different scales. GVWR is the most the truck itself may weigh, loaded: truck, fuel, people, gear in the bed, and the pin weight the trailer puts on it. GCWR is the most the truck and loaded trailer may weigh together. The trailer rating, conventional or gooseneck, is the most the trailer alone may weigh. A load is safe only when it clears all three, and on a three-quarter-ton with a stock trailer, the one you hit first is almost always GVWR, through payload. A stock-trailer example, for illustration, on the rated 2026 truck. Take a 28-foot aluminum gooseneck at 7,000 pounds empty with eight cows at 1,300 pounds, 17,400 pounds behind the truck, and a pin weight around 20 percent, about 3,480 pounds. On the 2026 Crew Cab long bed 4WD Duramax, GM's published 2026 figures are 19,000 pounds gooseneck without the package and 21,500 with it, 3,566 pounds of payload, a 2026 GVWR of up to 11,900 pounds with the package, and a 2026 GCWR of 30,000 pounds with the package. The trailer clears the 2026 tow rating with room, but the pin alone uses nearly all of the 2026 payload before the driver climbs in. That is the pattern every gooseneck buyer here runs into, and the 2026 stock-trailer post linked above works two full examples. Now the 2027 version of that example, honestly: the same Crew Cab long bed 4WD Duramax with the package carries a 12,300-pound GVWR code, 400 pounds above the 2026 code. We cannot tell you what that does to payload, because the 2027 curb weight is unpublished, and we cannot tell you the 2027 GCWR or trailer rating, because neither is published. What we can say is that the truck's own loaded ceiling went up, and that when the 2027 tables land, look at payload first, not the headline tow number. Numbers to replace with your own The trailer, cow, and pin weights above are illustrations. Weigh your loaded trailer and your pin at the elevator scale, then compare both to the trailering information label in the driver door jamb of the truck you are buying. Every rating on that label is for that truck, properly equipped, and it beats anything on this page. 5. IMAGE BREAK The gooseneck and fifth-wheel prep that comes with the Max Trailering Package is unchanged for 2027: hitch tray, stamped and capped bed holes, and the 7-pin connector in the bed wall. What Is in the 2027 Max Trailering Package, and Who Can Order It? The same hardware as 2026, under the same code, with the same rules. The Max Trailering Package puts the 3500 HD frame, 3500 HD rear leaf springs and shock package, and the 12-inch rear axle under a 2500 HD, and adds the spray-on bedliner and the gooseneck and fifth-wheel prep with the hitch platform, stamped and capped bed holes, and bed-mounted 7-pin connector. It is the reason the 2500 HD's highest GVWR codes exist. It requires the Duramax and 18-inch or 20-inch wheels, and it is available on the Pro, SLE, SLT, AT4, Denali, and Denali Ultimate. It is not offered on the AT4X, on any Double Cab, with the lowered 10,000-pound GVWR option, with the bed delete, or with the extra trailering wiring harness at the rear of the bed. If you want it on a Regular Cab, it is there; if you want it on a gas truck, it is not, and that is the trade the 2026 Max Trailering Package post lays out. One practical change for a 2027 order: the base all-season 18-inch tire on the Pro and SLE is not offered with the package, so a Pro or SLE with Max Trailering will carry the all-terrain tire instead. Ask us to confirm the tire on your build; it is an easy footnote to miss. Why Does the 18-Inch Rule Matter Less on a 2027? Because there is no longer a wheel that fails it. The Max Trailering Package has always required 18-inch or larger wheels; on the 2026 truck a Pro or SLE on the standard 17-inch wheel had to step up to qualify. For 2027 the 17-inch wheel and tire are gone from the lineup. The 18-inch machined aluminum wheel is the base retail wheel on the Pro, SLE, and SLT, the fleet steel wheel is 18 inches, the AT4X rides on 18s, and everything from the AT4 up is on 20s. Two consequences. First, the package decision on a 2027 comes down to the Duramax, because the wheel prerequisite is already met on every truck we can order. Second, the 2026 GVWR and payload rows for 17-inch trucks no longer apply to anything, which is why the 2027 GVWR menu is shorter and starts higher: the 2026 floor above the lowered option was 10,050 pounds, and the 2027 floor is 10,650. This is also the clearest reason the 2027 ratings will not simply copy the 2026 ones. Wheel and tire size feed the axle ratings that feed GVWR and payload, and the base tire changed. That is not a reason to worry; it is a reason to wait for the table. If you are deciding between a rated 2026 on the lot and a 2027 order, the buy now or order a 2027 post is written for that call. What Trailering Gear Is Standard on Every 2027 Trim? The same standard set as 2026, on all seven trims: the receiver hitch with 7-pin and 4-pin connectors, the integrated trailer brake controller, Hitch Guidance on the rear camera, trailer sway control and hill start assist through StabiliTrak, the auxiliary transmission and engine oil coolers, and the trailering information label in the driver door jamb. A Pro work truck tows with the same controller as a Denali Ultimate. ProGrade Trailering, Hitch View plus the In-Vehicle Trailering App with its light test, checklist, maintenance reminders, and trailer tire pressure module, is standard on the SLT and up and comes to the SLE with the Preferred Package; the trailer tire pressure sensor set, four sensors for up to six trailer wheels, is available with it. Pro Safety Plus on the SLE and SLT adds Trailer Side Blind Zone Alert, the Bed View camera for lining up a gooseneck alone, HD Surround Vision, and provisions for the accessory rear trailer camera, all standard content on the AT4 and up. New for 2027 and useful behind a trailer: adaptive cruise control is standard on every trim, so a Pro or SLE pulling a flatbed down US 83 to Pierre holds its gap without a package. The Technology Package with the Rear Camera Mirror, which shows the road behind a stock trailer instead of the trailer nose, is now available on the SLT as well. The gooseneck ball and chain kit is a dealer-installed accessory we can add before delivery on any truck with the prep. HOW-TO How to Spec a 2027 Sierra 2500 HD Order So the Rating Lands Where You Need It Six steps, in the order we use at the desk; the last one is the one that matters. Weigh the trailer first: loaded the way you haul, at the elevator scale, with the pin weight measured separately. Order to the trailer you own, not the one you might buy. Pick the Duramax if a gooseneck is the job: the Max Trailering Package requires it, and the highest GVWR codes only exist with it. Choose the cab and bed for the code you want: Crew Cab long bed 4WD Duramax with the package is the 12,300-pound GVWR truck; the standard bed with the package is 12,150; a Double Cab or an AT4X cannot take the package at all. Skip the lowered GVWR option: unless licensing requires it, because it reduces both towing and payload and blocks the package. Add the trailering visibility: Pro Safety Plus on an SLE or SLT for the blind-zone alert and Bed View camera, or the Preferred Package on an SLE for Hitch View and the Trailering App. Read the label at delivery: the trailering information label in the driver door jamb of your 2027 carries its conventional, gooseneck, payload, and GCWR figures. Compare your scale ticket to that label, not to this page. QUICK OVERVIEW TABLE Should You Order a 2027 With the Max Trailering Package? Worth it if Skip it if You pull a gooseneck stock trailer or hay flatbed and were ordering the Duramax anyway You want the highest 2027 GVWR code for your cab and bed You want the gooseneck prep and bedliner included You can wait for the 2027 ratings before buying a bigger trailer You want the gas V8, a Double Cab, or an AT4X, none of which take it Your trailer is a bumper-pull the standard hitch handles You need a rated truck this month, which means the 2026 on the lot You need the lowered 10,000-pound GVWR for licensing KEY TAKEAWAYS Key Takeaways 2027 towing, payload, and GCWR are not published; they will appear in the 2027 GM Trailering Guide, and the rated truck today is the 2026 on our lot. GVWR is the one 2027 number GM has printed: 10,000 to 12,300 pounds, with the maximum on a Crew Cab long bed 4WD Duramax with the Max Trailering Package. A higher GVWR is a signal for payload, not a payload figure, because 2027 curb weights are unpublished. The Max Trailering Package is unchanged: Duramax required, 18-inch or 20-inch wheels, not on the AT4X or Double Cab. Every 2027 truck already wears 18-inch or larger wheels, so the package decision is the engine decision. FAQ Frequently Asked Questions What is the 2027 Sierra 2500 HD towing capacity? GM has not published 2027 trailer ratings; they will be released in the 2027 GM Trailering Guide, and the label in the driver door jamb of each truck carries the final figure. For the 2026 model year, GM rates the Sierra 2500 HD at up to 20,000 pounds conventional and 22,390 pounds gooseneck, properly equipped, and those 2026 figures are the ones to plan a trailer around today. What is the highest GVWR on a 2027 Sierra 2500 HD? 12,300 pounds, on a Crew Cab long bed 4WD with the Duramax and the Max Trailering Package. The Crew Cab standard bed with the same engine and package is coded at 12,150 pounds. The 2026 maximum was 11,900 pounds. GVWR is the loaded weight limit of the truck itself, not a trailer rating. Does the 2027 Max Trailering Package still require the Duramax? Yes. It requires the Duramax turbo-diesel V8 and 18-inch or 20-inch wheels, and it is available on the Pro, SLE, SLT, AT4, Denali, and Denali Ultimate. It is not offered on the AT4X, on Double Cab models, with the lowered 10,000-pound GVWR option, or with the bed delete. Does a higher GVWR mean the 2027 has more payload? Usually, but not by a number anyone can state yet. Payload is GVWR minus curb weight, and GM has not published 2027 curb weights. The 2027 GVWR ceiling is 400 pounds above the 2026 ceiling on the same configuration, which points in the right direction; the actual payload will be on the trailering information label in the door jamb of the delivered truck. MY TAKE My Take on 2027 Sierra 2500 HD Towing I would rather tell you we do not have a number than hand you one that came off a listing site. What we do have is enough to write a good 2027 order: the Max Trailering Package is the same package, it still needs the Duramax, every truck already has the wheels for it, and the Crew Cab long bed with the package carries the highest GVWR code GM has ever put on a 2500 HD. If your outfit hauls a gooseneck, that is the truck to order, and the 2027 ratings will land on its door label before it lands in your yard. If you need the rated truck now, for a stock trailer you are already pulling or a fifth-wheel you have already bought, buy the 2026. It has published numbers, it is in stock, and the honest math on it is in the 2026 posts linked through this one. Either way, weigh the trailer and the pin once, and compare to the label. That step never changes. The full 2027 GVWR menu, packages, and trims are in the 2027 GMC Sierra 2500 HD buyers guide. Or bring your scale ticket to Beadle Chevrolet GMC at 2200 US Hwy 12 in Mobridge, or call or text 605-845-7277, and we will write the order around it. BOTTOM CTA View Sierra 2500 HD Inventory Get Pre-Qualified Contact Beadle Chevrolet GMC ABOUT THE AUTHOR (LOCKED) 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.
