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 2018-2025 Owners Manual: Drunk Driving
Death and injury associated with drinking and driving is a global tragedy. Warning Drinking and then driving is very dangerous. Your reflexes, perceptions, attentiveness, and judgment can be affected by even a small amount of alcohol. You can have a serious — or even fatal — collision if you drive after drinking. Do not drink and drive or ride with a driver who has been drinking. Ri..
GMC Terrain 2018-2025 Owners Manual: Water in Fuel (Diesel)
Improper fuel tank inspection or cleaning, or contaminated fuel from suppliers, can cause water to be pumped into the fuel tank along with the diesel fuel. If a WATER IN FUEL - CONTACT SERVICE message displays, the water must be drained immediately. Warning Diesel fuel containing water is still combustible. You or others could be burned. If the fuel needs to be drained, keep sparks, flam..
