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 2018-2026 Owners Manual: Remote Keyless Entry (RKE) System Operation


    The Keyless Access system allows for vehicle entry when the Remote Keyless Entry (RKE) transmitter is within 1m (3 ft). See “Keyless Access Operation” following. The RKE transmitter functions may work up to 60m (197 ft) away from the vehicle. Other conditions can impact the performance of the transmitter. See Remote Keyless Entry (RKE) System. With Remote Start Shown, Without Similar..

    GMC Terrain 2018-2026 Owners Manual: Off-Road Driving


    All-wheel-drive vehicles can be used for off-road driving. Vehicles without all-wheel drive and vehicles not equipped with All Terrain (AT) or On-Off Road (OOR) tires must not be driven off-road except on a level, solid surface. To contact the tire manufacturer for more information about the original equipment tires, see the warranty manual. Controlling the vehicle is the key to successf..

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