GMC Terrain: Lighting / Interior Lighting

Fog Lamps

The fog lamps button is on the instrument panel beside the steering wheel. To turn on the fog lamps, the ignition and the headlamps or parking lamps must be on...

Instrument Panel Illumination Control

The brightness of the instrument cluster display, infotainment display and controls, steering wheel controls, and all other illuminated controls, as well as feature status indicators can be adjusted...

Other information:

GMC Terrain 2018-2025 Owners Manual: Power Outlet 110/120 Volt Alternating Current

If equipped, this power outlet can be used to plug in electrical equipment that uses a maximum limit of 150 watts. The power outlet is on the rear of the center console. An indicator light on the outlet turns on to show it is in use. The light comes on when the ignition is on and equipment requiring less than 150 watts is plugged into the outlet, and no system fault is detected...

GMC Terrain 2018-2025 Owners Manual: Front Turn Signal Lamps

To replace one of these bulbs: Open the hood. See Hood. Remove the bulb access cap from the top of the headlamp assembly by turning it counterclockwise. Remove the bulb from the bulb socket by pinching the tabs on either side of the bulb and pull straight out...