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:
Daytime Running Lamp (DRL) (Uplevel)
1. From the back side of the headlamp assembly, remove the bottom cap to
replace the DRL bulb.
2. Disconnect electrical connector.
3. Remove the DRL bulb socket from the headlamp assembly.
4. ...
CD/DVD Messages
If Disc Read Error appears on the display and/or the CD/DVD comes out, it could
be for one of the following reasons:
If a CD was inserted with an invalid or unknown format.
If a DVD is not fro ...
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
The engine coolant reservoir is
located in the engine compartment
on the driver side of the vehicle.
See Engine Compar ...