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:
Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer. ...
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload.
When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circui ...
Lighting
Select the Lighting menu and the
following will be displayed:
• Exit Lighting
• Vehicle Locator Lights ...