GMC Terrain: Keys, Doors, and Windows / Doors

Safety Locks

The rear door safety locks prevent passengers from opening the rear doors from inside the vehicle. Manual Safety Locks If equipped, the safety lock is on the inside edge of the rear doors...

Liftgate

Warning Exhaust gases can enter the vehicle if it is driven with the liftgate or trunk/hatch open, or with any objects that pass through the seal between the body and the trunk/hatch or liftgate...

Other information:

GMC Terrain 2018-2024 Owners Manual: Starting the Engine

Shift the vehicle into P (Park) or N (Neutral). To restart the engine when the vehicle is already moving, use N (Neutral) only. Caution Do not try to shift to P (Park) if the vehicle is moving. If you do, you could damage the transmission. Shift to P (Park) only when the vehicle is stopped...

GMC Terrain 2018-2024 Owners Manual: Folding Mirrors and Heated Mirrors

Folding Mirrors Manual Folding Mirrors The mirrors can be folded inward toward the vehicle to prevent damage when going through an automatic car wash. Push the mirror outward to return it to the original position. Memory Mirrors The vehicle may have memory mirrors...