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:
Receiving a Call
When an incoming call is received, the audio system mutes and a ring tone is
heard in the vehicle.
- Press to answer the call.
- Press to ignore a call. ...
Interior Glass
To clean, use a terry cloth fabric dampened with water. Wipe droplets left behind
with a clean dry cloth. Commercial glass cleaners may be used, if necessary, after
cleaning the interior glass wit ...
Airbag System Check
The airbag system does not need
regularly scheduled maintenance
or replacement. Make sure the
airbag readiness light is working.
See Airbag Readiness Light.
Notice: If an airbag covering is
...