The table below lists every trim of the 2015 GMC Sierra 3500 HD Crew CAB with the engine, drivetrain, axle ratio, horsepower, torque, GVWR, curb weight, and payload that go with that trim's headline tow rating. Manufacturers often publish more than one tow figure per truck — a conventional bumper-hitch rating, a weight-distributing rating, and a gooseneck or fifth-wheel rating — so the highest number here is the maximum across all hitch classes the source carries for the trim.

Per-trim breakdown

Configuration Engine HP Torque Axle Tow (lb) GVWR Curb Payload
Pickup 4D 6 1/2 ft V8, Flex Fuel, 6.0 Liter 360 380 13,000 6,695
Pickup 4D 8 ft V8, Flex Fuel, 6.0 Liter 360 380 19,600 7,229
SLT Pickup 4D 6 1/2 ft V8, Flex Fuel, 6.0 Liter 360 380 13,000 6,695
Denali Pickup 4D 6 1/2 ft V8, Flex Fuel, 6.0 Liter 360 380 13,000
Denali Pickup 4D 8 ft V8, Flex Fuel, 6.0 Liter 360 380 13,000
SLE Pickup 4D 6 1/2 ft V8, Turbo Dsl, 6.6L 397 765 13,000 6,695
SLE Pickup 4D 8 ft V8, Turbo Dsl, 6.6L 397 765 19,600 7,229
SLT Pickup 4D 8 ft V8, Turbo Dsl, 6.6L 397 765 19,600 7,229

How to interpret the headline tow figure

Ratings in this range are typically achievable with a weight-distributing hitch and the appropriate tow package. The conventional bumper-pull rating without weight distribution will be lower than the headline figure shown here — usually 5,000 to 8,000 lb. Confirm the hitch class on your vehicle's door-jamb sticker before towing at the upper end.

How this year compares to 2014

The 2014 GMC Sierra 3500 HD Crew CAB carried a maximum tow rating of 18,000 lb. The 2015 model adds 1,600 lb on top of that — usually a sign the manufacturer added a tow package option, refreshed the powertrain, or revised hitch class certification. See the 2014 GMC Sierra 3500 HD Crew CAB page for the full per-trim breakdown of the prior year.

Other 2015 GMC models

The rest of GMC's 2015 lineup, ranked by maximum tow rating. Click through for the per-trim breakdown of any of these.

All figures sourced from manufacturer documentation. See our methodology for how the dataset is compiled. Always confirm against your vehicle's door-jamb sticker before towing.