See also:

Vehicle Load Limits
It is very important to know how much weight your vehicle can carry. This weight is called the vehicle capacity weight and includes the weight of all occupants, cargo, and all nonfactory-installed opt ...

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 ...

Automatic Headlamp System
When it is dark enough outside, the headlamps come on automatically. Do not cover the light sensor on top of the instrument panel or the headlamps will come on when they are not needed. The syst ...