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 2018-2026 Owners Manual: Seat Adjustment
Warning You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. Adjust the driver seat only when the vehicle is not moving. To adjust the seat position: Pull the handle at the front of the seat cushion to unlock it...
GMC Terrain 2018-2026 Owners Manual: Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, notify General Motors. In the U.S., call 1-800-GMC-8782 (1-800-462-8782), or write: GMC Customer Assistance Center P.O. Box 33172 Detroit, MI 48232-5172 In Canada, call 1-800-263-3777 (English) or 1-800-263-7854 (French), or write: General Motors of Canada Company Customer Care Centre, Mail Code: CA1-163-005 1908 C..
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