GMC Sierra 2500 Towing Capacity Chart by Year and Engine
GMC Sierra 2500 towing capacity ranges from about 13,000 lbs on early Duramax models to 22,500 lbs on the current Max Trailering Package, and the number that matters is the one tied to your specific cab, bed, and engine. Dealer sites tend to quote whatever figure fits their current inventory,
which is why the same model year shows up with three or four different numbers across the web. This chart breaks the Sierra 2500 HD down by generation, engine, and configuration, using GMC’s own published figures, so you can find the rating that actually applies to your truck.
Max gooseneck towing by generation
| Horsepower | 401 hp |
| Torque | 464 lb-ft |
| Max conventional | 17,370 lbs |
| Horsepower | 470 hp |
| Torque | 975 lb-ft |
| Max conventional | 20,000 lbs |
GMC Sierra 2500 HD Towing Capacity By Generation
| Generation | Engine | Max Conventional Towing | Max Gooseneck or Fifth Wheel |
|---|---|---|---|
| 2011 to 2014 | 6.6L Duramax LML V8 | Not consistently published for pre-2014 years | Up to 17,800 lbs |
| 2015 to 2019 | 6.6L Duramax V8 | 13,000 lbs | 15,400 lbs |
| 2020 to 2023 | 6.6L Duramax L5P V8 | Up to 18,500 lbs | Up to 18,510 lbs |
| 2024 to 2026 | 6.6L Duramax L5P V8, updated | 20,000 lbs | Up to 22,390 to 22,500 lbs |
The biggest jump came with the 2024 refresh. GMC introduced a new Max Tow Package that pushed the Regular Cab diesel gooseneck rating past 22,000 lbs for the first time. Earlier generations topped out closer to 18,500 lbs, so a used 2020 to 2023 Sierra 2500 HD will tow noticeably less than a new one, even with the identical Duramax badge on the fender.
For years before 2014, GMC’s own archived trailering guides are harder to find online, and dealer estimates for that era vary widely. If you own a pre-2014 Sierra 2500 HD, the door jamb trailering label on your specific truck is the only fully reliable source.
GMC Sierra 2500 Towing Capacity By Engine
The engine you choose changes GMC Sierra 2500 towing capacity more than any other factor.
6.6L V8 L8T Gas Engine
The current gas engine makes 401 horsepower at 5,200 rpm and 464 lb-ft of torque at 4,000 rpm, paired with an Allison 10-speed automatic transmission. It reaches up to 17,370 lbs conventional towing in a Regular Cab configuration, though most Crew Cab gas builds max out closer to 14,500 lbs.
6.6L Duramax Turbo Diesel V8
The Duramax L5P now makes 470 horsepower at 2,800 rpm and 975 lb-ft of torque at 1,600 rpm, also paired with the Allison 10-speed. This is the engine behind the truck’s headline numbers, reaching 20,000 lbs conventional and up to 22,390 to 22,500 lbs gooseneck or fifth wheel when equipped with the Max Trailering Package.
Two terms explain why the same truck shows different numbers for different hitch types. Gross Vehicle Weight Rating (GVWR) is the maximum total weight of the truck itself, including cargo and passengers. Gross Combined Weight Rating (GCWR) is the maximum combined weight of the truck and trailer together.
GMC Sierra 2500 Towing Capacity By Cab and Configuration
Cab style changes the numbers as much as engine choice does. Here is the 2022 to 2023 model year breakdown, before the 2024 Max Tow Package update.
| Cab Style | Gas Conventional | Diesel Conventional | Gas Gooseneck | Diesel Gooseneck |
|---|---|---|---|---|
| Regular Cab | 14,500 lbs | 14,500 lbs | 17,370 lbs | 18,510 lbs |
| Double Cab | 14,500 lbs | 14,500 lbs | 17,050 lbs | 18,200 lbs |
| Crew Cab | 14,500 lbs | 18,500 lbs | 16,940 lbs | 18,500 lbs |
The Regular Cab, long bed, 2WD build consistently posts the highest gooseneck number in every generation, since it carries the least extra weight over the rear axle. The Max Trailering Package (NHT) is required across every generation to hit the figures in this article. Without it, expect several thousand pounds less regardless of engine.
GMC Sierra 2500 HD vs Ram 2500 vs Ford F-250 Towing Capacity
The Sierra 2500 HD does not compete alone in the three-quarter-ton class, and the numbers are closer than dealer marketing usually admits.
| Truck | Max Conventional Towing | Max Gooseneck or Fifth Wheel |
|---|---|---|
| GMC Sierra 2500 HD | 20,000 lbs (Duramax) | 22,390 to 22,500 lbs |
| Ram 2500 | 20,000 lbs (High-Output Cummins) | Higher with 5th wheel package |
| Ford F-250 Super Duty | Up to 22,000 lbs (High-Output Power Stroke) | Up to 23,000 lbs |
The Ram 2500 towing capacity chart shows the standard 6.4L HEMI V8 tops out at 17,750 lbs, while the newly available High-Output 6.7L Cummins closes the gap with GMC at 20,000 lbs conventional. Ford’s High-Output Power Stroke currently claims the highest gooseneck ceiling in the class, per Ford’s official Super Duty towing and hauling specifications. The Sierra 2500 HD sits squarely in the middle, ahead of Ram on gooseneck capacity and behind Ford’s top-line number.
GMC Sierra 2500 Payload Capacity By Year
Payload measures how much weight the truck itself can carry in the cab and bed, based on GVWR, and it is a different number from towing capacity.
| Model Year | Max Payload | Configuration |
|---|---|---|
| 2022 | 3,862 lbs | Regular Cab, gas engine |
| 2024 to 2026 | 4,094 lbs (max) | Regular Cab, gas engine |
| 2024 to 2026 | 2,701 lbs (lowest) | AT4X AEV Edition, Crew Cab, 4WD, Duramax |
The gas engine consistently carries more payload than the Duramax, since the diesel engine itself adds several hundred pounds that comes directly out of the GVWR allowance. Buyers cross-shopping payload against the Ram lineup can check the Ram payload capacity chart for a direct comparison.
How To Calculate Your Safe Towing Limit
- Find your truck’s GCWR and GVWR on the driver’s door jamb label, not the brochure figure.
- Subtract your truck’s actual curb weight, with a full tank and passengers, from the GVWR to get your available payload.
- Weigh your loaded trailer, including cargo, at a certified scale rather than relying on the trailer’s dry weight.
- Confirm your tongue weight or pin weight falls within your remaining payload allowance.
- For a full walkthrough of the math, see how to calculate towing capacity.
Choosing The Right GMC Sierra 2500 Configuration For Towing
Engine choice and cab configuration are the two levers that move GMC Sierra 2500 towing capacity the most, not the model year badge alone. A 2022 Duramax Crew Cab and a 2025 Duramax Regular Cab can differ by 4,000 lbs or more. Before you hitch up, check the door jamb label on your specific truck rather than a brochure number.
If you are outfitting a Sierra 2500 HD for regular towing duty, the right hitch, brake controller, and mirrors matter as much as the rating itself. See GMC Sierra accessories built for heavier-duty use.
Frequently Asked Questions
What is the maximum towing capacity of a GMC Sierra 2500?
The current GMC Sierra 2500 HD tows up to 20,000 lbs conventionally and up to 22,390 to 22,500 lbs with a gooseneck or fifth wheel setup. This requires the Duramax Turbo Diesel engine and the Max Trailering Package.
How much can a GMC Sierra 2500 tow with the Duramax diesel?
The 6.6L Duramax Turbo Diesel V8 tows up to 20,000 lbs conventionally in current model years. Earlier 2020 to 2023 models with the same engine family topped out closer to 18,500 lbs.
What is the difference between GMC Sierra 2500 conventional and gooseneck towing capacity?
Conventional towing uses a standard bumper hitch and tops out lower because the load sits behind the rear axle. Gooseneck and fifth wheel setups place the hitch point over the rear axle, which raises the maximum rating by several thousand pounds.
Does the GMC Sierra 2500 or Ram 2500 tow more?
Both trucks reach 20,000 lbs conventional towing with their top diesel engines. The Sierra 2500 HD currently posts a higher gooseneck ceiling, while Ford’s F-250 leads the class overall.
What is the payload capacity of a GMC Sierra 2500?
Payload capacity ranges from about 2,701 lbs on the heaviest diesel trims to over 4,000 lbs on lighter gas-powered Regular Cab configurations. Exact figures depend on cab, drivetrain, and engine choice.
