GMC Terrain: Lighting / Exterior Lighting

Lighting

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Exterior Lamp Controls

The exterior lamp control is on the instrument panel to the left of the steering column. There are four positions. : Turns the exterior lamps off and deactivates the AUTO mode...

Other information:

GMC Terrain 2018-2025 Owners Manual: Warning Lights, Gauges, and Indicators

Warning lights and gauges can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to the warning lights and gauges could prevent injury. Some warning lights come on briefly when the engine is started to indicate they are working...

GMC Terrain 2018-2025 Owners Manual: Tow/Haul Mode

For information on the Tow/Haul Mode, see Driver Mode Control. Automatic Engine Grade Braking Automatic Engine Grade Braking assists when driving downhill. It maintains vehicle speed by automatically implementing a shift pattern that uses the engine and the transmission to slow the vehicle...