GMC Terrain: Setting Adaptive Cruise Control / Increasing Speed While ACC Is at a Set Speed

If ACC is already activated, do one of the following:

  • Use the accelerator to get to the higher speed. Press SET–. Release SET– and the accelerator pedal. The vehicle will now cruise at the higher speed.

    When the accelerator pedal is pressed, ACC will not brake because it is overridden. The ACC indicator will turn blue on the instrument cluster.

  • Press and hold RES+ until the desired set speed is displayed, then release it.
  • To increase vehicle speed in smaller increments, press RES+ briefly. For each press, the vehicle goes about 1 km/h (1 mph) faster.
  • To increase vehicle speed in larger increments, hold RES+. While holding RES+, the vehicle speed increases to the next 5 km/h (5 mph) step, then continues to increase by 5 km/h (5 mph) at a time.

When it is determined that there is no vehicle ahead or the vehicle ahead is beyond the selected following gap, then the vehicle speed will increase to the set speed.

Reducing Speed While ACC Is at a Set Speed

If ACC is already activated, do one of the following:

  • Use the brake to get to the desired lower speed. Release the brake and press SET–. The vehicle will now cruise at the lower speed.
  • Press and hold SET– until the desired lower speed is reached, then release it.
  • To decrease the vehicle speed in smaller increments, press SET− briefly. For each press, the vehicle goes about 1 km/h (1 mph) slower.
  • To decrease the vehicle speed in larger increments, hold SET−. While holding SET−, the vehicle speed decreases to the next 5 km/h (5 mph) step, then continues to decrease by 5 km/h (5 mph) at a time.

    Resuming a Set Speed

    If the ACC is set at a desired speed and then the brakes are applied, ACC is disengaged without erasing the set speed from memory. To begin using ACC again, press RES+ briefly while moving more than 5 km/h (3 mph)...

    Selecting the Follow Distance Gap

    When a slower moving vehicle is detected ahead within the selected following gap, ACC will adjust the vehicle's speed and attempt to maintain the follow distance gap selected...

    Other information:

    GMC Terrain 2018-2023 Owners Manual: (TCS) / (ESC). Turning the Systems Off and On (Midlevel Cluster)


    Caution Do not repeatedly brake or accelerate heavily when TCS is off. The vehicle driveline could be damaged. At speeds of 56 km/h (35 mph) or above, this ability to turn off or on is disabled. TCS and StabiliTrak/ESC can be turned off or on using the DIC controls as follows: Press to access the cluster applications...

    GMC Terrain 2018-2023 Owners Manual: Tire Pressure Monitor Operation


    This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel assembly, excluding the spare tire and wheel assembly...

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