See also:

California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is n ...

Other Rainy Weather Tips
Besides slowing down, other wet weather driving tips include: ○ Allow extra following distance. ○ Pass with caution. ○ Keep windshield wiping equipment in good shape. ○ Kee ...

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 ...