Rear Windows; Sun Visors - GMC Sierra 2018 Owner's Manual

52 Keys, Doors, and Windows
2. Turn the ignition on or to ACC/
ACCESSORY.
3. Partially open the window to be
programmed. Then close it and
continue to pull the switch
briefly after the window has
fully closed.
4. Open the window and continue
to press the switch briefly after
the window has fully opened.

Rear Windows

Power Sliding Rear Window
If equipped, the power sliding rear
window works when the ignition has
been turned on or to ACC/
ACCESSORY, or Retained
Accessory Power (RAP) must be
active. See Retained Accessory
Power (RAP) 0 250.
Press the switch to open the
window.
Pull the switch to close the
window.
The power sliding rear window
cannot be operated manually.

Sun Visors

Pull the sun visor down to block
glare. Detach the sun visor from the
center mount to pivot to the side
window and, if equipped, extend
along the rod.