GMC Terrain: Warning Lights, Gauges, and Indicators / 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 2018-2024 Owners Manual: 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. For the uplevel cluster, this light is near the fuel gauge and comes on briefly when the ignition is turned on as a check to show it is working...
GMC Terrain 2018-2024 Owners Manual: Service Emission System
If a problem occurs with the vehicle emission system, the DIC message SERVICE EMISSION SYSTEM - SEE OWNERS MANUAL NOW – 282 KM (175 MI) UNTIL 104 KM/H (65 MPH) MAX SPEED displays. The displayed mileage will decrease as driving continues. In some cases this message will clear itself, indicating that the emission system was able to correct the condition...
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