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:
Content Theft-Deterrent
Your vehicle is equipped
with a content
theft-deterrent alarm
system.
Here is how to operate the system:
1. Open the door.
2. Lock the door with the power door lock switch
or the remote key ...
Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If
the octane rating is less than 87, an audible knocking noise, commonly referred
to as spark knock, might be heard when ...
When the System Does Not
Seem to Work Properly
The RVC system may not work
properly or display a clear image if:
• The RVC is turned off. See
“Turning the Rear Camera
System On or Off” earlier in this
section.
• It is dark.
• ...