Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard.
If the light next to the OnStar buttons is red, the system may not be functioning properly. Push 
and request a vehicle diagnostic check. If the light appears clear (no light appears), your OnStar subscription has expired and all services have been deactivated.
Push to confirm that the OnStar equipment is active.
See also:
Using the Store Command
The store command allows a phone number to be
stored without entering the digits individually.
1. Press and hold for two seconds.
The system
responds with “Ready” followed by a tone.
2. S ...
Check Engine Light
Your vehicle has a
computer which
monitors operation of
the fuel, ignition,
and emission control
systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intend ...
Automatic Transmission Shift Lock
The vehicle has an automatic transmission shift lock control system. The shift
lock control system is designed to:
. Prevent ignition key removal unless the shift lever is in P (Park).
. Prevent m ...