GMC Terrain: Warning Lights, Gauges, and Indicators / Security Light

GMC Terrain 2018-2023 Owners Manual / Instruments and Controls / Warning Lights, Gauges, and Indicators / Security Light

GMC Terrain. Security Light

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.

If the light stays on and the engine does not start, there could be a problem with the theft-deterrent system. See Immobilizer Operation.

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...

High-Beam On Light, Front Fog Lamp Light and Lamps On Reminder

High-Beam On Light This light comes on when the high-beam headlamps are in use. See Headlamp High/Low-Beam Changer. IntelliBeam Light This light comes on when the IntelliBeam system, if equipped, is enabled...

Other information:

GMC Terrain 2018-2023 Owners Manual: Diesel Particulate Filter

The engine is equipped with a Diesel Particulate Filter (DPF) that will filter or trap particulates. The DPF is under the vehicle in the exhaust system. Depending on a number of factors monitored by the engine computer, the DPF will need to be cleaned of accumulated solids...

GMC Terrain 2018-2023 Owners Manual: Hazard Warning Flashers