GMC Terrain: Bulb Replacement / LED Lighting

High Intensity Discharge (HID) Lighting

Warning The High Intensity Discharge (HID) lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured...

Front Turn Signal Lamps

To replace one of these bulbs: Open the hood. See Hood. Remove the bulb access cap from the top of the headlamp assembly by turning it counterclockwise...

Other information:

GMC Terrain 2018-2023 Owners Manual: Storing the Tire Sealant and Compressor Kit

The tire sealant and compressor kit is in a bag in the rear compartment storage area. Open the liftgate. See Liftgate. Fold the rear part of the load floor to the front. Turn the retainer nut counterclockwise to remove the tire sealant and compressor kit bag...

GMC Terrain 2018-2023 Owners Manual: Malfunction Indicator Lamp (Check Engine Light)

This light is part of the vehicle’s emission control on-board diagnostic system. If this light is on while the engine is running, a malfunction has been detected and the vehicle may require service. The light should come on to show that it is working when the ignition is in Service Mode...