GMC Terrain: Accessories and Modifications - General Information - Vehicle Care - GMC Terrain Owner's ManualGMC Terrain: Accessories and Modifications

Adding non-dealer accessories or making modifications to the vehicle can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and handling, emissions systems, aerodynamics, durability, and electronic systems like antilock brakes, traction control, and stability control. These accessories or modifications could even cause malfunction or damage not covered by the vehicle warranty.

Damage to vehicle components resulting from modifications or the installation or use of non&-GM certified parts, including control module or software modifications, is not covered under the terms of the vehicle warranty and may affect remaining warranty coverage for affected parts.

GM Accessories are designed to complement and function with other systems on the vehicle. See your dealer to accessorize the vehicle using genuine GM Accessories installed by a dealer technician.

Also, see Adding Equipment to the Airbag-Equipped Vehicle on page 3‑33.

    California Perchlorate Materials Requirements
    Certain types of automotive applications, such as airbag initiators, seat belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate material ...

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    If the passenger’s frontal airbag OFF indicator illuminates and the ON indicator turns off even when the front passenger’s seat is occupied by an adult
    This can be caused by the adult incorrectly sitting in the front passenger’s seat. Turn the ignition switch to the “LOCK” position. Ask the front passenger to set the seatback to the upri ...

    Heater operation
    NOTE - Models with air conditioner system: When the “” or “” position is selected, the air conditioner compressor automatically operates regardless of the position of the air condi ...

    Temperature sensors
    Temperature sensors 1) Interior air temperature sensor 2) Solar sensor The automatic climate control system employs several sensors. These sensors are delicate. If they are not treated pro ...