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 2018-2026 Owners Manual: Fuel Filter Replacement (Diesel)

Warning Diesel fuel is flammable. It could start a fire if something ignites it, and people could be burned. Do not let it get on hot engine parts, and keep matches or other ignition sources away. The fuel filter is on the passenger side, in front of the rear tire...

GMC Terrain 2018-2026 Owners Manual: Side Blind Zone Alert (SBZA)

If equipped, the SBZA system is a lane-changing aid that assists drivers with avoiding crashes that occur with moving vehicles in the side blind zone (or spot) areas. When the vehicle is in a forward gear, the left or right side mirror display will light up if a moving vehicle is detected in that blind zone...