GMC Terrain: Keys, Doors, and Windows

Roadside Assistance Program

U.S.: 1-888-881-3302 TTY Users (U.S. Only): 1-888-889-2438 Canada: 1-800-268-6800 New GMC owners are automatically enrolled in the Roadside Assistance Program...

Keys and Locks

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Other information:

GMC Terrain 2018-2024 Owners Manual: Seat Adjustment - Manual Front Seats

To adjust a manual seat: Pull the handle at the front of the seat. Slide the seat to the desired position and release the handle. Try to move the seat back and forth to be sure it is locked in place. Seat Height Adjuster Move the lever up or down to manually raise or lower the seat. Reclining Seatbacks To recline the manual seatback: Lift the lever. Move the seatback to the ..

GMC Terrain 2018-2024 Owners Manual: Daytime Running Lamps (DRL)

DRL can make it easier for others to see the front of your vehicle during the day. Fully functional DRL are required on all vehicles first sold in Canada. The DRL system comes on in daylight when the following conditions are met: The ignition is on. The exterior lamp control is in AUTO. The vehicle is not in P (Park). The light sensor determines it is daytime. When the DRL are on, ..