GMC Terrain: Setting Adaptive Cruise Control / Approaching and Following a Vehicle

GMC Terrain. Approaching and Following a Vehicle

The vehicle ahead indicator is in the instrument cluster. It only displays when a vehicle is detected in your vehicle’s path moving in the same direction. If this symbol is not displaying, ACC will not respond to or brake for vehicles ahead.

ACC automatically slows the vehicle down and adjusts vehicle speed to follow a detected vehicle ahead at the selected following gap. The vehicle speed increases or decreases to follow a detected vehicle in front of your vehicle when that vehicle is traveling slower than your vehicle set speed. It may apply limited braking, if necessary. When braking is active, the brake lamps will come on. The automatic braking may feel or sound different than if the brakes were applied manually. This is normal.

    Alerting the Driver

    If ACC is engaged, driver action may be required when ACC cannot apply sufficient braking because of approaching a vehicle too rapidly. When this condition occurs, six red lights will flash on the windshield...

    Stationary or Very Slow-Moving Objects

    Warning ACC may not detect and react to stopped or slow-moving vehicles ahead of you. For example, the system may not brake for a vehicle it has never detected moving...

    Other information:

    GMC Terrain 2018-2026 Owners Manual: Remote Vehicle Start


    If equipped, the engine can be started from outside of the vehicle. Starting the Vehicle Press and release on the RKE transmitter. Immediately press and hold for at least four seconds or until the turn signal lamps flash. When the vehicle starts, the parking lamps will turn on...

    GMC Terrain 2018-2026 Owners Manual: ACC Automatically Disengages


    ACC may automatically disengage and the driver will need to manually apply the brakes to slow the vehicle if: The front camera is blocked or visibility is reduced. The Traction Control System (TCS) or StabiliTrak/ESC system has activated or been disabled...

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