GMC Terrain: Setting Adaptive Cruise Control / 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.
  • There is a fault in the system.
  • A DIC message displays to indicate that ACC is temporarily unavailable.

The ACC indicator will turn white when ACC is no longer active.

In some cases, when ACC is temporarily unavailable, regular cruise control may be used. See “Switching Between ACC and Regular Cruise Control” in this section. Always consider driving conditions before using either cruise control system.

    Irregular Objects Affecting ACC

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    Notification to Resume ACC

    ACC will maintain a follow gap behind a detected vehicle and slow your vehicle to a stop behind that vehicle. If the stopped vehicle ahead has driven away and ACC has not resumed, the vehicle ahead indicator will flash as a reminder to check traffic ahead before proceeding...

    Other information:

    GMC Terrain 2018-2022 Owners Manual: Fuel (LYX - 1.5L L4 Turbo Engine) and Fuel (LTG - 2.0L L4 Turbo Engine)


    Fuel (LYX - 1.5L L4 Turbo Engine) Regular Unleaded Fuel Use only Regular 87 octane — (R+M)/2 — or higher unleaded gasoline in your vehicle. TOP TIER Detergent Gasoline is recommended. Do not use gasoline with an octane rating lower as it will result in reduced performance and lower fuel economy...

    GMC Terrain 2018-2022 Owners Manual: Vehicle Personalization


    The following are all possible vehicle personalization features. Depending on the vehicle, some may not be available. For System, Apps, and Personal features and functions, see “Settings” in the infotainment manual. To access the vehicle personalization menu: Touch the Settings icon on the Home Page of the infotainment display...

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