GMC Terrain: Roof / Automatic Reversal System
The sunroof has an automatic reversal system that is only active when the sunroof is operated in express-close mode.
If an object is in the path while express closing, the reversal system will detect an object, stop, and open the sunroof again.
If frost or other conditions prevent closing, override the feature by closing the sunroof in manual mode. To stop movement, release the switch.
Dirt and debris may collect on the sunroof seal or in the track. This could cause an issue with sunroof operation or noise. It could also plug the water drainage system. Periodically open the sunroof and remove any obstacles or loose debris. Wipe the sunroof seal and roof sealing area using a clean cloth, mild soap, and water. Do not remove grease from the sunroof.
If water is seen dripping into the water drainage system, this is normal.
Sunroof
Sunroof Switch
Sunshade Switch
If equipped, the sunroof only
operates when the ignition is on or
in ACC/ACCESSORY, or when
Retained Accessory Power (RAP) is
active...
Other information:
GMC Terrain 2018-2026 Owners Manual: Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both circuits need to be working This light should come on briefly when the engine is started. If it does not come on then, have it fixed so it will be ready to warn you if there is a problem. When the ignit..
GMC Terrain 2018-2026 Owners Manual: (TCS) / (ESC). Turning the Systems Off and On (Uplevel Cluster)
Caution Do not repeatedly brake or accelerate heavily when TCS is off. The vehicle driveline could be damaged. At speeds of 56 km/h (35 mph) or above, this ability to turn off or on is disabled. TCS and StabiliTrak/ESC can be turned off or on using the DIC controls as follows: Press or to scroll to the Options application. Press or to scroll through the items in the Options menu. Pre..
