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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 ...

Following Distance
Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid heavy braking and sudden turns. ...

Power Door Locks
There is a power door lock switch on the instrument panel. There are power door lock switches on the front door panels. Q : Press to lock the doors. K : Press to unlock the doors. When locking ...