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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 ...

Fuel
Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline ...

MP3 Music Menu
Press the Menu screen button while that source is active to access the menu. Press any of the following buttons on the MP3 Menu: Shuffle Songs: Press to play the tracks randomly. Press again to stop ...