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 2018-2021 Owners Manual: If the Vehicle Is Stuck


    Slowly and cautiously spin the wheels to free the vehicle when stuck in sand, mud, ice, or snow. If stuck too severely for the traction system to free the vehicle, turn the traction system off and use the rocking method. See Traction Control/Electronic Stability Control. Warning If the vehicle's tires spin at high speed, they can explode, and you or others could be injured. The vehicle c..

    GMC Terrain 2018-2021 Owners Manual: Remote Vehicle Start


    If equipped, this feature allows you to start the engine from outside the vehicle. : This button will be on the RKE transmitter if the vehicle has remote start. The climate control system will use the previous settings during a remote start. The rear defog may come on during remote start based on cold ambient conditions. The rear defog indicator light does not come on during remote star..

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