GMC Terrain: Performance and Maintenance / Roadside Assistance Program

Diesel Exhaust Fluid

Diesel Exhaust Fluid (DEF) is used with diesel engines to reduce the amount of regulated emissions produced. The DEF system must be maintained for the vehicle to run properly...

Keys, Doors, and Windows

..

Other information:

GMC Terrain 2018-2025 Owners Manual: ACC Automatically Disengages

ACC may automatically disengage and the driver will need to manually apply the brakes to slow the vehicle if: The front camera is blocked or visibility is reduced. The Traction Control System (TCS) or StabiliTrak/ESC system has activated or been disabled. There is a fault in the system. A DIC message displays to indicate that ACC is temporarily unavailable. The ACC indicator wil..

GMC Terrain 2018-2025 Owners Manual: 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. The knob for this feature is on the instrument panel beside the steering column. Push the knob in all the way until it extends out and then turn the knob clockwise or counterclockwise to br..