GMC Terrain: Setting Adaptive Cruise Control / Do Not Use ACC on Hills and When Towing a Trailer

Driving in Narrow Lanes

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Disengaging ACC

There are three ways to disengage ACC: Step lightly on the brake pedal. Press . Press . ..

Other information:

GMC Terrain 2018-2026 Owners Manual: Safety Locks

The rear door safety locks prevent passengers from opening the rear doors from inside the vehicle. Manual Safety Locks If equipped, the safety lock is on the inside edge of the rear doors. To use the safety lock: Move the lever down to the lock position. Close the door. Do the same for the other rear door. To open a rear door when the safety lock is on: Unlock the door by activati..

GMC Terrain 2018-2026 Owners Manual: Automatic Headlamp System

When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically. There is a light sensor on top of the instrument panel. Do not cover the sensor; otherwise the headlamps will come on when they are not needed. The system may also turn on the headlamps when driving through a parking garage or tunnel. When it is bright enough outside, the he..