GMC Terrain: Maintenance / Service

All vehicles have a label underhood that identifies the refrigerant used in the vehicle. The refrigerant system should only be serviced by trained and certified technicians. The air conditioning evaporator should never be repaired or replaced by one from a salvage vehicle. It should only be replaced by a new evaporator to ensure proper and safe operation.

During service, all refrigerants should be reclaimed with proper equipment. Venting refrigerants directly to the atmosphere is harmful to the environment and may also create unsafe conditions based on inhalation, combustion, frostbite, or other health-based concerns.

The air conditioning system requires periodic maintenance. See Maintenance Schedule.

    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...

    Driving and Operating

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    Other information:

    GMC Terrain 2018-2025 Owners Manual: Hill Descent Control Light and Lane Keep Assist (LKA) Light


    Hill Descent Control Light If equipped, the Hill Descent Control light comes on when the system is ready for use. When the light flashes, the system is active. See Hill Descent Control (HDC). Lane Keep Assist (LKA) Light If equipped, this light is green if LKA is available to assist. LKA may assist by gently turning the steering wheel if the vehicle approaches a detected lane marking wit..

    GMC Terrain 2018-2025 Owners Manual: Engine Drive Belt Routing


    1.5L L4 Gas Engine 1.6L L4 Diesel Engine 2.0L L4 Gas Engine..

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