GMC Terrain: Warning Lights, Gauges, and Indicators / Tow/Haul Mode Light

Antilock Brake System (ABS) Warning Light

For vehicles with the Antilock Brake System (ABS), this light comes on briefly when the engine is started. If the light does not come on, have it fixed so it will be ready to warn if there is a problem...

Hill Descent Control Light and Lane Keep Assist (LKA) Light

Hill Descent Control Light If equipped, the Hill Descent Control light comes on when the system is ready for use. When the light flashes, the system is active...

Other information:

GMC Terrain 2018-2026 Owners Manual: Brakes

Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound can come and go or can be heard all the time when the vehicle is moving, except when applying the brake pedal firmly...

GMC Terrain 2018-2026 Owners Manual: Driver Door Key Lock Cylinder Access (In Case of Dead Battery)

To access the driver door key lock cylinder: Pull the door handle (1) to the open position and hold it open until cap removal is complete. Insert the key into the slot (3) on the bottom of the cap (2) and lift the key upward. Move the cap (2) rearward and remove...