See also:

Overview
The GMC Sierra All Terrain HD concept is an exploration of heavy-duty truck capability combined with greater off-road versatility. It is highlighted by a bold exterior design, enhanced all-terrain ...

Security Light
The security light should come on briefly as the engine is started. If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your deale ...

Rear Vision Camera (RVC)
The vehicle may have a Rear Vision Camera (RVC) system. Read this entire section before using it. The RVC can assist the driver when backing up by displaying a view of the area behind the vehicle ...