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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 ...

What to Add
Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑12. Always clean the brake fluid reservoir cap and the area around the cap before removi ...

Safety Belts
Refer to the following sections for important information on how to use safety belts properly: ○ Safety Belts on page 3‑12. ○ How to Wear Safety Belts Properly on page 3‑ ...