Vehicle Features
See also:
How OnStar Service Works
Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions.
Push this red emergency button to get priority help from specially ...
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
(Rear Window Defogger): Press to
turn the rear
window defogger on or off. An indicator light below
the button ...
Engine Cooling when Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine Overheating. ...
