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 another cellular area.
See also:
Making a Call
Calls can be made using the following commands.
Dial or Call: The dial or call command can be used interchangeably to dial a phone number or a stored name tag.
Digit Dial: This command allows a phon ...
Windshield Wipers
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.
Although the circuit is protected from electrical overload, overloa ...
When the System Does Not Seem To Work Properly
The RVC system might not work properly or display a clear image if:
• The RVC is turned off. See “Turning the RVC System On or Off” earlier in this section.
• It is dark.
• The sun or the ...