GMC Terrain: Setting Adaptive Cruise Control / Irregular Objects Affecting ACC

ACC may have difficulty detecting the following objects:

  • Vehicles in front of your vehicle that have a rear aspect that is low, small, or irregular
  • An empty truck or trailer that has no cargo in the cargo bed
  • Vehicles with cargo extending from the back end
  • Non-standard shaped vehicles, such as vehicle transport, vehicles with a side car fitted, or horse carriages
  • Vehicles that are low to the road surface
  • Objects that are close to the front of your vehicle
  • Vehicles on which extremely heavy cargo is loaded in the cargo area or rear seat

GMC Terrain. Irregular Objects Affecting ACC

    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...

    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...

    Other information:

    GMC Terrain 2018-2022 Owners Manual: Traction Control/Electronic Stability Control. System Operation


    System Operation The vehicle has a Traction Control System (TCS) and StabiliTrak/ Electronic Stability Control (ESC), an electronic stability control system. These systems help limit wheel slip and assist the driver in maintaining control, especially on slippery road conditions...

    GMC Terrain 2018-2022 Owners Manual: 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...

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