2008 GMC Sierra 1500 Extended CAB towing capacity

The 2008 GMC Sierra 1500 Extended CAB is published in 10 configurations, with tow ratings ranging from 7,500 to 10,200 lb depending on cab, bed, drivetrain, and hitch class. The peak figure (10,200 lb) sits in half-ton plus / heavy-duty truck territory.

The table below lists every trim of the 2008 GMC Sierra 1500 Extended 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

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 2007

The 2007 GMC Sierra 1500 Extended CAB carried a maximum tow rating of 8,900 lb. The 2008 model adds 1,300 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 2007 GMC Sierra 1500 Extended CAB page for the full per-trim breakdown of the prior year.

Other 2008 GMC models

The rest of GMC's 2008 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.