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 ...

Starting the Vehicle
1. Aim the RKE transmitter at the vehicle. 2. Press and release . 3. Immediately after completing Step 2, press and hold until the turn signal lamps flash. When the vehicle starts, the parking ...

Safety Locks
The vehicle has rear door security locks to prevent passengers from opening the rear doors from the inside. Open the rear doors to access the security locks on the inside edge of each door. To set ...