2021 GMC Sierra 3500 diesel for sale - Scottsdale, AZ - craigslist (2024)

FAQs

How many miles per gallon does a 2021 GMC Sierra 3500hd get? ›

Based on data from 36 vehicles, 2,884 fuel-ups and 976,221 miles of driving, the 2021 GMC Sierra 3500 HD gets a combined Avg MPG of 13.92 with a 0.16 MPG margin of error.

Maximum Towing Capacity: 36,000 pounds.

How much can a 3500 HD GMC Sierra pull? The heavy-duty 2024 GMC Sierra 3500 HD has the highest GMC Sierra towing capacity, a maximum gooseneck towing capacity of up to 36,000 pounds.

GMC Sierra 3500 HD

The 6.6L engine can reach a towing capacity of 16,010 lbs. and payload of 6,374 lbs. with its long box 4WD configuration with dual rear wheels. Take the same configuration but equip it with the 6.6L Duramax Turbo-Diesel V8 engine, and you'll get a max GMC Sierra towing capacity of 20,000 lbs.

3.0 Duramax is the Best of Both Worlds

Most owners are reporting a best of around 27 MPG in real world conditions in a 4wd truck (what most buyers will choose) which is downright impressive, but even more so is the towing capacity.

With this engine, the Chevy Silverado 3500 HD can tow up to 36,000 pounds. To achieve this towing capacity, the Silverado 3500 HD requires the Regular Cab/Long Bed WT 2WD DRW with the available Duramax 6.6L Turbo-Diesel V8, Max Trailering Package, and a gooseneck hitch.

Generally, the 3500HD features a stiffer suspension to accommodate heavier loads, resulting in a firmer ride compared to the 2500HD. While this provides enhanced stability when hauling or towing heavy loads, it may sacrifice some comfort during everyday driving.

3.0L Duramax Diesel Engine Performance Specs:

460 lb-ft of torque. 9,500 pounds of towing capacity.

How much weight can you put in the bed of a Chevy 3500 dually? ›

Truck Bed & Payload

Feel free to load up the Chey Silverado 3500's truck bed too. With a high-strength steel frame, it can handle a payload up to 7,442 pounds. Plus, with a dozen standard cargo tie-downs, you can secure everything and stop your cargo from sliding around.

Medium-Duty Trucks

For a point of reference, think of the Chevrolet Silverado 2500 to 6500, GMC Sierra 2500 to 3500, Ford F-250 through F-650, Ram 2500 to 5500, and the Nissan Titan XD. These medium-duty trucks can be used privately, mostly to tow boats and trailers, but are primarily used as commercial vehicles.

Both the 2023 Ram 3500 and 2024 Ram 3500 can tow a maximum of 37,090 pounds¹ when equipped with the High-Output 6.7-liter Cummins Turbo Diesel I-6 engine. Although this is the maximum amount that can be towed by the model, the two other engine options in the 2023 and 2024 lineups can also tow a hefty amount.

About the GMC Sierra 3500HD

The Sierra 3500 Heavy Duty is a necessity if you need a one-ton pickup to work even harder than you do.

The average MPG for the Silverado 3500 with diesel is 21 MPG. This is the EPA-estimated combined fuel economy for the Silverado 3500 with the 6.6L V8 Turbo Diesel engine. This means that on the highway, you can expect to get around 24 MPG and in the city, you can expect to get around 19 MPG.

Fuel & MPG

0/0 mi. 36.0 gal.