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.

GMC Terrain. Automatic Reversal System

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...

    Seats and Restraints

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    Other information:

    GMC Terrain 2018-2021 Owners Manual: Winter Driving


    Driving on Snow or Ice Snow or ice between the tires and the road creates less traction or grip, so drive carefully. Wet ice can occur at about 0 °C (32 °F) when freezing rain begins to fall. Avoid driving on wet ice or in freezing rain until roads can be treated. For Slippery Road Driving: Accelerate gently. Accelerating too quickly causes the wheels to spin and makes the surface ..

    GMC Terrain 2018-2021 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. Remove the tire sealant and compressor kit from the bag. To store the tire sealant and compressor kit, reverse the step..

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