GMC Terrain: Performance and Maintenance / Roadside Assistance Program

Diesel Exhaust Fluid

Diesel Exhaust Fluid (DEF) is used with diesel engines to reduce the amount of regulated emissions produced. The DEF system must be maintained for the vehicle to run properly...

Keys, Doors, and Windows

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Other information:

GMC Terrain 2018-2026 Owners Manual: Power Liftgate Operation

Warning You or others could be injured if caught in the path of the power liftgate. Make sure there is no one in the way of the liftgate as it is opening and closing. Caution To avoid damage to the liftgate or liftgate glass, make sure the area above and behind the liftgate is clear before opening it. If equipped with a power liftgate, the switch is usually on the driver door. The switch..

GMC Terrain 2018-2026 Owners Manual: Scheduling Service Appointments

When the vehicle requires warranty service, contact your dealer and request an appointment. By scheduling a service appointment and advising the service consultant of your transportation needs, your dealer can help minimize your inconvenience. If the vehicle cannot be scheduled into the service department immediately, keep driving it until it can be scheduled for service, unless, of cou..