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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 ...

How to Reset the Engine Oil Life System
Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: If the vehicle does not have Driver Information Center (DIC) butt ...

Traction Control System (TCS)
The traction control system limits wheel spin. The system is on when the vehicle is started. ○ To turn off traction control, press and release located on the console. illuminates and the ...