GMC Terrain: Warning Lights, Gauges, and Indicators / Diesel Exhaust Fluid (DEF) Warning Light

GMC Terrain 2018-2025 Owners Manual / Instruments and Controls / Warning Lights, Gauges, and Indicators / Diesel Exhaust Fluid (DEF) Warning Light

GMC Terrain. Diesel Exhaust Fluid (DEF) Warning Light

This light, a Driver Information Center (DIC) Message, and a chime come on when there is an issue with the DEF.

If the DEF issue has not been corrected, the light will continue to flash. The vehicle's speed may also be limited. See Diesel Exhaust Fluid.

Low Fuel Warning Light

For the base level cluster, this light comes on when the fuel tank is low on fuel. The light turns off when fuel is added. If it does not, have the vehicle serviced...

The security light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer. If the system is working normally, the indicator light turns off...

Other information:

GMC Terrain 2018-2025 Owners Manual: Engine Oil

To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: Use engine oil approved to the proper specification and of the proper viscosity grade...

GMC Terrain 2018-2025 Owners Manual: Reading Lamps

There are reading lamps on the overhead console and over the rear passenger doors. These lamps come on when any door is opened. Front Reading Lamps The front reading lamps are in the overhead console. Press the lamp lenses to turn the front reading lamps on or off...

Vehicle Personalization

The following are all possible vehicle personalization features. Depending on the vehicle, some may not be available.

For System, Apps, and Personal features and functions, see “Settings” in the infotainment manual.

To access the vehicle personalization menu: