Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
California Proposition 65 Warning
Most motor vehicles, including this one, contain and/or emit chemicals known
to the State of California to cause cancer and birth defects or other reproductive
harm. Engine exhaust, many parts and ...
Service Vehicle Messages
SERVICE A/C (Air Conditioning) SYSTEM
This message displays when the electronic sensors that control the air conditioning and heating systems are no longer working.
Have the climate control system s ...
Playing a CD-R or CD-RW MP3
(Tune): Turn to select MP3/WMA files.
SEEK: Press to go to the start of the track, if more than 10 seconds have played. Press and hold or press multiple times to continue moving backward through tr ...