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: Instrument Panel Fuse Block

The instrument panel fuse block is under the instrument panel on the driver side. To access the fuses, press and release the latch near the top center square. Apply pressure to the two retaining tabs on the sides of the cover, until the two retaining tabs clear the sides of the instrument panel...

GMC Terrain 2018-2025 Owners Manual: Exhaust Fluid Low

A full DEF tank will last for several thousand kilometers (miles), depending on vehicle usage. As the exhaust fluid level drops, warnings will automatically be displayed in the DIC. Exhaust fluid level status is available in the DIC. See “Diesel Exhaust Fluid (DEF) Level (Diesel Engine Only)” in Driver Information Center (DIC) (Base and Midlevel) or Driver Information Center (DIC) (U..