See also:

Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push to try the call again or try again after driving a few miles into ...

Place a Call Using a Stored Number
1. Push . System responds: “OnStar ready.”. 2. Say “Call <name tag>.”. System responds: “OK, calling <name tag>.” ...

PARK BRAKE RELEASED
For vehicles with the electric parking brake, this message displays when the parking brake has been released from the set position. See the electric parking brake information under Parking Br ...