See also:

Returning the Seat to the Seating Position
To return the seatback to the seating position: 1. From the rear of the vehicle, raise the seatback to the upright position using the pullstrap on the back of the third row seat, or lift the seatback ...

Driving on Snow or Ice
Drive carefully when there is snow or ice between the tires and the road, creating less traction or grip. Wet ice can occur at about 0°C (32°F) when freezing rain begins to fall, resulting in ev ...

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 ...