Requires 2WD Long Box with available 6.6L Duramax Diesel engine and Fifth-Wheel or gooseneck hitch. Trailer weight ratings are calculated assuming properly equipped vehicle, plus driver and one passenger. The weight of other optional equipment, passengers and cargo will reduce the trailer weight your vehicle can tow. See dealer for details.
2WD Crew Cab with gas engine. Maximum payload capacity includes weight of driver, passengers, optional equipment, and cargo
The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details.
Service varies with conditions and location. Requires active service plan and paid AT&T data plan. See onstar.com for details and limitations.