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:
LEARN DELAY ACTIVE
WAIT XX MIN (MINUTES)
If the vehicle has the keyless
access system, this message
displays when matching new
transmitters to the vehicle.
See the Keyless Access information
for Remote Keyless Entry (RKE)
System O ...
High/Low—Beam Headlamps (Uplevel)
The high/low beam headlamps on the uplevel are High Intensity Discharge
(HID) and should be replaced at the dealer. ...
Magnetic Ride Control
The XLR also is one of the world's first vehicles to be equipped with
Magnetic Ride Control - electronically controlled, magnetic-fluid based
real-time damping. The system uses four wheel-to-body ...