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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 ...

Tire Pressure for High-Speed Operation
WARNING Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires. Sustained high-speed driving causes excessive heat buildup and can cause sudden tire failure. You c ...

Ejecting a CD (Six-Disc CD Player)
EJECT : Press and release to eject the disc that is currently playing. Remove the CD when Remove Disc displays. If the disc is not removed, after several seconds the disc is automatically pulled back ...