GMC Terrain: Cruise Control / Adaptive Cruise Control

If equipped, Adaptive Cruise Control (ACC) allows the cruise control set speed and following gap to be selected. Read this entire section before using this system. The following gap is the following time between your vehicle and a vehicle detected directly ahead in your path, moving in the same direction. If no vehicle is detected in your path, ACC works like regular cruise control. ACC uses a windshield mounted front camera sensor.

If a vehicle is detected in your path, ACC can apply acceleration or limited, moderate braking to maintain the selected following gap.

To disengage ACC, apply the brake. If ACC is controlling the vehicle speed when the Traction Control System (TCS) or StabiliTrak/ Electronic Stability Control (ESC) system activates, ACC may automatically disengage. See Traction Control/Electronic Stability Control. When road conditions allow ACC to be safely used, ACC can be turned back on. Disabling the TCS or StabiliTrak/ ESC system will disengage and prevent engagement of ACC.

ACC can reduce the need for you to frequently brake and accelerate, especially when used on expressways, freeways, and interstate highways. When used on other roads, you may need to take over the control of braking or acceleration more often.


ACC has limited braking ability and may not have time to slow the vehicle down enough to avoid a collision with another vehicle you are following. This can occur when vehicles suddenly slow or stop ahead, or enter your lane. Also see “Alerting the Driver” later in this section. Complete attention is always required while driving and you should be ready to take action and apply the brakes. See Defensive Driving.


ACC will not detect or brake for children, pedestrians, animals, or other objects.

Do not use ACC when:

  • On winding and hilly roads or when the camera sensor is blocked by snow, ice, or dirt. The system may not detect a vehicle ahead. Keep the windshield and headlamps clean.
  • When visibility is poor due to rain, snow, fog, dirt, insect residue, or dust; when other foreign objects obscure the camera’s view; or when the vehicle in front or oncoming traffic causes additional environmental obstructions, such as road spray. ACC performance is limited under these conditions.
  • On slippery roads where fast changes in tire traction can cause excessive wheel slip
  • With extremely heavy cargo loaded in the cargo area or rear seat
  • When towing a trailer

GMC Terrain. Adaptive Cruise Control

GMC Terrain. Adaptive Cruise Control : Press to turn the system on or off. The indicator turns white on the instrument cluster when ACC is turned on.

RES+ : Press briefly to resume the previous set speed or to increase vehicle speed if ACC is already activated. To increase speed by about 1 km/h (1 mph), press RES+ briefly. To increase speed to the next 5 km/h (5 mph) mark on the speedometer, hold RES+.

SET– : Press briefly to set the speed and activate ACC or to decrease vehicle speed if ACC is already activated. To decrease speed by about 1 km/h (1 mph), press SET– briefly. To decrease speed to the next 5 km/h (5 mph) mark on the speedometer, hold SET–.

GMC Terrain. Adaptive Cruise Control : Press to disengage ACC without erasing the selected set speed.

GMC Terrain. Adaptive Cruise Control : Press to select a following gap setting for ACC of Far, Medium, or Near.

The speedometer reading can be displayed in either English or metric units.

See Instrument Cluster (Base and Midlevel) or Instrument Cluster (Uplevel). The increment value used depends on the units displayed.

Switching Between ACC and Regular Cruise Control

To switch between ACC and regular cruise control, press and hold GMC Terrain. Adaptive Cruise Control. A Driver Information Display (DIC) message displays. See Vehicle Messages.

GMC Terrain. Adaptive Cruise Control

When ACC is engaged, a green GMC Terrain. Adaptive Cruise Control indicator will be lit on the instrument cluster and the following gap will be displayed. When the regular cruise control is engaged, a green GMC Terrain. Adaptive Cruise Control indicator will be lit on the instrument cluster; the following gap will not display.

When the vehicle is turned on, the cruise control mode will be set to the last mode used before the vehicle was turned off.


Always check the cruise control indicator on the instrument cluster to determine which mode cruise control is in before using the feature. If ACC is not active, the vehicle will not automatically brake for other vehicles, which could cause a crash if the brakes are not applied manually. You and others could be seriously injured or killed.

    Erasing Speed Memory


    Setting Adaptive Cruise Control

    If is on when not in use, SET–/ RES+ could be pressed by mistake and engage ACC when not desired. Keep off when cruise is not being used. Select the set speed desired for ACC...

    Other information:

    GMC Terrain 2018-2023 Owners Manual: Forward Collision Alert (FCA) System and Forward Automatic Braking (FAB)

    Forward Collision Alert (FCA) System If equipped, FCA may help avoid or reduce the harm caused by front-end crashes. FCA provides a green indicator, , when a vehicle is detected ahead. This indicator displays amber if you follow a vehicle too closely...

    GMC Terrain 2018-2023 Owners Manual: Jump Starting

    For more information about the vehicle battery, see Battery - North America. If the battery has run down, try to use another vehicle and some jumper cables to start your vehicle. Be sure to use the following steps to do it safely. Warning WARNING: Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer..


      Vehicle Messages

      Messages displayed on the DIC indicate the status of the vehicle or some action that may be needed to correct a condition. Multiple messages may appear one after another.

      The messages that do not require immediate action can be acknowledged and cleared by pressing V. The messages that require immediate action cannot be cleared until that action is performed.

      read more

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