GMC Terrain: Setting Adaptive Cruise Control / Objects Not Directly in Front of Your Vehicle

The detection of objects in front of the vehicle may not be possible if:

  • The vehicle or object ahead is not within your lane.
  • The vehicle ahead is shifted, not centered, or is shifted to one side of the lane.

    Other Vehicle Lane Changes

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    Driving in Narrow Lanes

    Vehicles in adjacent traffic lanes or roadside objects may be incorrectly detected when located along the roadway...

    Other information:

    GMC Terrain 2018-2021 Owners Manual: Shifting Into Park


    Warning It can be dangerous to get out of the vehicle if the vehicle is not in P (Park) with the parking brake set. The vehicle can roll. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, use the steps that follow. If you are pulling a trailer, see Driving Ch..

    GMC Terrain 2018-2021 Owners Manual: Increasing Speed While Using Cruise Control


    If the cruise control system is already activated: Press and hold +RES on the steering wheel until the vehicle accelerates to the desired speed, then release it. To increase the speed in small increments, briefly press +RES. For each press, the vehicle goes about 1 km/h (1 mph) faster. The speedometer reading can be displayed in either English or metric units. See Instrument Clu..

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