GMC Terrain: Setting Adaptive Cruise Control / Driving in Narrow Lanes

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...

Do Not Use ACC on Hills and When Towing a Trailer

Do not use ACC when driving on steep hills or when towing a trailer. ACC will not detect a vehicle in the lane while driving on steep hills. If the brakes are applied, ACC disengages...

Other information:

GMC Terrain 2018-2025 Owners Manual: Electric Parking Brake

The vehicle has an Electric Parking Brake (EPB). The EPB can always be activated, even if the ignition is off. To prevent draining the battery, avoid repeated cycles of the EPB system when the engine is not running. The system has a or PARK Electric Parking Brake light, and a Service Parking Brake light or Service Parking Brake message...

GMC Terrain 2018-2025 Owners Manual: Passenger Compartment Air Filter

The filter removes dust, pollen, and other airborne irritants from outside air that is pulled into the vehicle. The filter should be replaced as part of routine scheduled maintenance. See Maintenance Schedule. To find out what type of filter to use, see Maintenance Replacement Parts...