See also:

Cargo Tie-Downs
The vehicle may be equipped with four cargo tie downs (A) located in the rear compartment. ...

Dolly Towing (Front-Wheel-Drive Vehicles Only)
To tow a front-wheel-drive vehicle from the front with two wheels on the ground: 1. Put the front wheels on a dolly. 2. Move the shift lever to P (Park). 3. Set the parking brake. 4. Clamp the s ...

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 ...