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: Checking Coolant


The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level mark is not visible, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant surge..

GMC Terrain 2018-2025 Owners Manual: OnStar Additional Information


In-Vehicle Audio Messages Audio messages may play important information at the following times: Prior to vehicle purchase. Press to set up an account. After change in ownership and at 90 days. Transferring Service Press to request account transfer eligibility information. The Advisor can cancel or change account information. Selling/Transferring the Vehicle Call 1-888-4ONSTAR (1-88..

Copyright © 2025 www.gmcterrain2.com