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 
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Advisor can run a check.
See also:
Ending a Call
Press to end a call. ...
Automatic Entry Recall
If entry/exit recall is programmed
on in the vehicle personalization
menu, automatic entry recall occurs
when the ignition is turned on.
See Vehicle Personalization.
To stop recall movement,
...
Universal Remote System
Operation
Using Universal Remote
Press and hold the appropriate
Universal Remote button for at least
half of a second. The indicator light
will come on while the signal is
being transmitted.
Erasing U ...