2021 GMC Sierra & Chevrolet Silverado 2500/3500 Heavy Duty Towing Guide

If you want to do some serious towing and trailering, there’s no better pickups on the market than the 2021 GMC Sierra 2500/3500 HD and the 2021 Chevrolet Silverado 2500/3500 HD! All four of these hard-working trucks can be found here at our Ernie Dean dealership in Alliston. Where you can shop for the full lineup of GM trucks (including the GMC Sierra 1500 and Chevrolet Silverado 1500), new and used, and with service and accessories to keep your pickup hauling in top order. Explore below the max towing capacities of the 2021 Sierra 2500 & 3500 and the 2021 Silverado 2500 & 3500, then find your perfect model and put all of this trailering capacity to good use!
View the 2020 HD towing guide here.
How Much Can I Tow with the 2021 GMC Sierra 2500 HD?
Engine: | Capacity: |
6.0L Gas V8 (Conventional) | 6,577 / 14,500 (kg/lbs) |
6.0L Gas V8 Fifth Wheel (or Gooseneck) | 7,879 / 17,370 (kg/lbs) |
6.6L Diesel V8 (Conventional) | 8,392 / 18,500 (kg/lbs) |
6.6L Diesel V8 Fifth Wheel (Wheel or Gooseneck) | 8,396 / 18,510 (kg/lbs) |
For trailering and towing, the 2021 GMC Sierra 2500 HD is the perfect option for entry-level towing on both the GMC and Silverado heavy duty pickup options. The Sierra 2500 HD reaches a maximum capacity of 7,879 / 17,370 (kg/lbs) on the 6.0L Gas V8 through fifth wheel or gooseneck towing, while the maximum of the 6.6L Diesel V8 is 8,396 / 18,510 (kg/lbs) for a fifth wheel or gooseneck. Put your GMC Sierra to the test and enjoy hearty trailering capacity through both conventional and 5th wheel/gooseneck methods.

How Much Can I Tow with the 2021 GMC Sierra 3500 HD?
Engine: | Capacity: |
6.0L Gas V8 (Conventional) | 7,620 / 16,800 (kg/lbs) |
6.0L Gas V8 Fifth Wheel (or Gooseneck) | 7,802 / 17,200 (kg/lbs) |
6.6L Diesel V8 (Conventional) | 9,072 / 20,000 (kg/lbs) |
6.6L Diesel V8 Fifth Wheel | 14,515 / 32,000 (kg/lbs) |
6.6L Diesel V8 Fifth Wheel (and Gooseneck Hitch) | 16,102 / 35,500 (kg/lbs) |
The top-level of GMC trucks gets you truly awe-inspiring towing capacity, through both gas and diesel and for conventional and fifth wheel/gooseneck trailering. On the gas side that equals a height of 7,802 / 17,200 (kg/lbs) capacity through the 6.0L Gas V8 Fifth Wheel (or Gooseneck) engine and method. For the ultimate in GMC trailering, the 6.6L Diesel V8 Fifth Wheel (and Gooseneck Hitch) reaches an incredible 16,102 / 35,500 (kg/lbs) on its highest capacity. Reach the heights of raw GMC towing capacity out of the 2021 GMC Sierra 3500HD!
How Much Can I Tow with the 2021 Chevrolet Silverado 2500 HD?
Engine: | Conventional Capacity: |
6.6L V8 Gas (17”/18” Wheel) | 6,577 / 14,500 (kg/lbs) |
6.6L V8 Gas (17” Wheel) | 6,577 / 14,500 (kg/lbs) |
6.6L V8 Gas (18”/20” Wheel) | 6,577 / 14,500 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (18”/20” Wheel) | 8,391 / 18,500 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (17” Wheel) | 6,577 / 14,500 (kg/lbs) |
Engine: | 5th-Wheel/Gooseneck Capacity: |
6.6L V8 Gas (17”/18” Wheel) | 7,684 / 16,940 (kg/lbs) |
6.6L V8 Gas (17” Wheel) | 7,684 / 16,940 (kg/lbs) |
6.6L V8 Gas (18”/20” Wheel) | 7,665 / 16,900 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (18”/20” Wheel) | 8,391 / 18,500 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (17” Wheel) | 8,187 / 18,050 (kg/lbs) |
Across a selection of wheels and engines equipped, there’s a variety of awesome trailer potential able to be hauled by the 2021 Chevrolet Silverado 2500 HD. On the gas side of things, the 5th-wheel/gooseneck capacity has the highest mark out of the 6.6L V8 Gas engine (with 17”/18” wheels) at 7,684 / 16,940 (kg/lbs). The Duramax 6.6L Turbo-Diesel V8 (18”/20” wheels) engine reaches the tops equally through both conventional and 5th-wheel/gooseneck towing at a trailering capacity of 8,391 / 18,500 (kg/lbs)! Enter the world of excellent Chevy pickup towing with the Silverado 2500 HD!
How Much Can I Tow with the 2021 Chevrolet Silverado 3500 HD?
Engine: | Conventional Capacity: |
6.6L V8 Gas | 7,393 / 16,300 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (SRW) | 9,072 / 20,000 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (DRW) | 9,072 / 20,000 (kg/lbs) |
Engine: | 5th-Wheel/Gooseneck Capacity: |
6.6L V8 Gas | 7,575 / 16,700 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (SRW) | 9,938 / 21,910 (kg/lbs) |
Duramax 6.6L Turbo-Diesel V8 (DRW) | 14,243 / 31,400 (kg/lbs) |
If you want serious towing and trailering out of your Chevy, choose the Silverado 3500 HD, your ticket in 2021 for raw performance. The 6.6L V8 Gas engine sees a height of 7,575 / 16,700 (kg/lbs) of capacity through the 5th-Wheel/gooseneck, while on the diesel side the Duramax 6.6L Turbo-Diesel V8 (DRW) engine it reaches a brawny 14,243 / 31,400 (kg/lbs) of 5th-wheel/gooseneck capacity. Tow at the height of what a Chevrolet truck can do, and do so in this 2021 Silverado 3500!
To make your next towing job that much easier, make sure you also equip your vehicle with the best in the proper accessories for added convenience and utility. Make your next trip out to the cottage, or work on the job site easier and funner than ever thanks to one of these heavy duty GMC and Chevrolet pickups, from us at Ernie Dean Chevrolet Buick GMC!
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