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: Climate Control Systems
With this system the heating, cooling, and ventilation in the vehicle can be controlled. Fan Control A/C (Air Conditioning) Air Delivery Mode Controls Defrost TEMP (Temperature Control) Rear Window Defogger Air Recirculation : Turn clockwise or counterclockwise to increase or decrease the fan speed or turn the fan off. TEMP : Turn the knob clockwise or counterclockwise to increase ..
GMC Terrain 2018-2026 Owners Manual: Off-Road Recovery
The vehicle's right wheels can drop off the edge of a road onto the shoulder while driving. Follow these tips: Ease off the accelerator and then, if there is nothing in the way, steer the vehicle so that it straddles the edge of the pavement. Turn the steering wheel about one-eighth of a turn, until the right front tire contacts the pavement edge. Turn the steering wheel to g..
