Rear Window Defogger
The rear window defogger uses a warming grid to remove fog from the rear window.
(Rear): Press this button
to turn the rear
window defogger on or off.
An indicator light in the button will come on to let you know that the rear window defogger is activated.
The rear window defogger will turn off approximately 10 minutes after the button is pressed. If you need additional warming time, press the button again.
If equipped, your heated mirrors will also come on when you press this button.
Notice: Do not use a razor blade or sharp object to clear the inside rear window. Do not adhere anything to the defogger grid lines in the rear glass. These actions may damage the rear defogger. Repairs would not be covered by your warranty.
See also:
Turn and Lane-Change Signals
An arrow on the instrument
panel cluster flashes in the
direction of the turn or
lane change.
For vehicles with the side blind zone alert system, an
arrow in the outside mirror flashes when ...
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the engine oil needs to be changed.
When you change the engine oil, be sure to reset the Oil Life System.
See Engine Oil Life System and Driv ...
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viewing of videos of each service.
Get subscription plan pricing and
sign up for OnStar Vehicle ...
