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Powertrain details
The GMC Sierra All Terrain HD concept is propelled by the new, production 6.6L Duramax turbo-diesel V-8 and Allison 1000 six-speed automatic transmission powertrain combination offered in the 2011 ...

Cruise Control
ON/OFF CRUISE : Press to turn the cruise control system on and off. CANCEL : Press to disengage cruise control without erasing the set speed from memory. RES/+: Move the thumbwheel up to make ...

Power Outlets
The vehicle has 12-volt outlets that can be used to plug in electrical equipment, such as a cell phone or MP3 player. The power outlets are located on the instrument panel below the climate controls, ...