GMC Terrain Quiz
Keys, Doors and Windows

Automatic Reverse System

In this manual: Keys, Doors and Windows
Introduction — 1In Brief — 46Keys, Doors and Windows — 37Seats and Restraints — 60Storage — 6Instruments and Controls — 58Lighting — 16Infotainment System — 1Climate Control — 8Driving and Operation — 128Vehicle Care — 75Service and Maintenance — 8Technical Data — 5Customer Information — 18OnStar — 6Connected Services — 4
~1min read

The sunroof has an automatic reverse system that is active only when the sunroof is operating in express close mode.

If an object is in the path during express close, the reverse system will detect the object, stop, and reopen the sunroof.

If frost or other conditions prevent closing, override the sunroof close function manually. To stop movement, release the switch.

GMC Terrain. Automatic Reversal System

Dirt and debris may accumulate on the sunroof seal or in the track. This may cause sunroof operation or noise problems. It may also block the water drainage system. Periodically open the sunroof and remove any obstructions or debris. Wipe the sunroof seal and roof seal with a clean cloth, mild soap, and water. Do not remove the lubricant from the sunroof.

If water is seen dripping from the drainage system, this is normal.

Test yourself

A quick GMC Terrain quiz: every answer comes with an explanation and a link to the manual page.