GMC Terrain: Roof / 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.
See Ignition Positions and Retained Accessory Power (RAP).
Sunroof Switch
Express-Open/Express-Close : To
express-open the sunroof, press
and release 
(1). Press and
release 
(1) at any time to stop
movement. To express-close the
sunroof, press and release 
(1).
Press and release 
(1) at any
time to stop movement.
Open/Close (Manual Mode) : To
open the sunroof, press and hold
(1) until the sunroof reaches
the desired position. To close the
sunroof, press and hold 
(1).
Comfort Stop : The sunroof has a
comfort stop feature that stops the
sunroof from opening fully. Press
and release the rear of 
to
move the sunroof to the partially
opened comfort stop position.
Pressing the rear of 
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 
(1) to vent
the sunroof. Press and release 
(1) to close the vent.
Sunshade Switch
Express-open/Express-close : To
express-open the sunshade, press
and release 
(2). Press and
release 
(2) at any time to stop
movement. To express-close the
sunshade, press and release 
(2). Press and release 
(2) at
any time to stop movement.
Open/Close (Manual Mode) : To
open the sunshade, press and hold 
(2) until the sunshade reaches
the desired position. To close the
sunshade, press and hold 
(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
..
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 2018-2025 Owners Manual: Safety Locks
The rear door safety locks prevent passengers from opening the rear doors from inside the vehicle. Manual Safety Locks If equipped, the safety lock is on the inside edge of the rear doors. To use the safety lock: Move the lever down to the lock position...
GMC Terrain 2018-2025 Owners Manual: Obstacle Detection Features
If the liftgate encounters an obstacle during a power open or close cycle, the liftgate will automatically reverse direction and move a short distance away from the obstacle. After removing the obstruction, the power liftgate operation can be used again...