GMC Terrain: Roof / Sunroof

GMC Terrain. Sunroof

  1. Sunroof Switch

  2. 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.

See Ignition Positions and Retained Accessory Power (RAP).

Sunroof Switch

Express-Open/Express-Close : To express-open the sunroof, press and release GMC Terrain. Sunroof (1). Press and release GMC Terrain. Sunroof (1) at any time to stop movement. To express-close the sunroof, press and release GMC Terrain. Sunroof (1). Press and release GMC Terrain. Sunroof (1) at any time to stop movement.

Open/Close (Manual Mode) : To open the sunroof, press and hold  GMC Terrain. Sunroof (1) until the sunroof reaches the desired position. To close the sunroof, press and hold GMC Terrain. Sunroof (1).

Comfort Stop : The sunroof has a comfort stop feature that stops the sunroof from opening fully. Press and release the rear of GMC Terrain. Sunroof to move the sunroof to the partially opened comfort stop position.

Pressing the rear of GMC Terrain. Sunroof again will open the sunroof fully. If the sunshade is not fully open when the comfort stop feature is pressed the second time, the sunshade will open fully.

Vent : From the closed position, press and release GMC Terrain. Sunroof (1) to vent the sunroof. Press and release GMC Terrain. Sunroof (1) to close the vent.

Sunshade Switch

Express-open/Express-close : To express-open the sunshade, press and release GMC Terrain. Sunroof (2). Press and release GMC Terrain. Sunroof (2) at any time to stop movement. To express-close the sunshade, press and release GMC Terrain. Sunroof (2). Press and release GMC Terrain. Sunroof (2) at any time to stop movement.

Open/Close (Manual Mode) : To open the sunshade, press and hold GMC Terrain. Sunroof (2) until the sunshade reaches the desired position. To close the sunshade, press and hold GMC Terrain. Sunroof (2). When the sunroof is opened, an air deflector will automatically raise. The air deflector will retract when the sunroof is closed.

The sunroof cannot be opened or closed if the vehicle has an electrical failure.

    Roof

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    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...

    Other information:

    GMC Terrain 2018-2022 Owners Manual: Wheel Alignment and Tire Balance


    The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing are not necessary on a regular basis. Consider an alignment check if there is unusual tire wear or the vehicle is significantly pulling to one side or the other...

    GMC Terrain 2018-2022 Owners Manual: Engine Oil Life System


    The engine oil life system calculates engine oil life based on vehicle use and displays the CHANGE ENGINE OIL SOON message when it is time to change the engine oil and filter. The oil life system should be reset to 100% only following an oil change...

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