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:
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can
be obtained from your dealer.
...
Replacing the Engine Air Cleaner/ Filter
1. Locate the air cleaner/filter assembly. See Engine Compartment Overview
.
2. Loosen the four screws on the cover of the housing and lift up the cover.
3. Remove the engine air cleaner ...
Navigation
OnStar navigation requires the
Directions and Connections
service plan.
Push to receive directions or
have them sent to the vehicle
navigation screen. Destinations
can also be forwarded to ...