GMC Terrain: Keys, Doors, and Windows / Exterior Mirrors

Immobilizer Operation

This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the transmitter leaves the vehicle...

Convex Mirrors

Warning A convex mirror can make things, like other vehicles, look farther away than they really are. If you cut too sharply into the right lane, you could hit a vehicle on the right...

Other information:

GMC Terrain 2018-2023 Owners Manual: Manual Operation

Select OFF to manually operate the liftgate. Caution Attempting to move the liftgate too quickly and with excessive force may result in damage to the vehicle. Operate the liftgate manually with a smooth motion and moderate speed. The system includes a feature which limits the manual closing speed to protect the components...

GMC Terrain 2018-2023 Owners Manual: Compact Spare Tire

Warning Driving with more than one compact spare tire at a time could result in loss of braking and handling. This could lead to a crash and you or others could be injured. Use only one compact spare tire at a time. If this vehicle has a compact spare tire, it was fully inflated when new; however, it can lose air over time...