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 2018-2024 Owners Manual: Power Seat Adjustment


    Warning The power seats will work with the ignition off. Children could operate the power seats and be injured. Never leave children alone in the vehicle. To adjust a power seat, if equipped: Move the seat forward or rearward by sliding the control forward or rearward. Raise or lower the front part of the seat cushion by moving the front of the control up or down. Raise or lower t..

    GMC Terrain 2018-2024 Owners Manual: (TCS) / (ESC). Turning the Systems Off and On (Midlevel Cluster)


    Caution Do not repeatedly brake or accelerate heavily when TCS is off. The vehicle driveline could be damaged. At speeds of 56 km/h (35 mph) or above, this ability to turn off or on is disabled. TCS and StabiliTrak/ESC can be turned off or on using the DIC controls as follows: Press to access the cluster applications. Use or to scroll through the list of available applications. Press..

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