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:
Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle
fluid unless you suspect there is a leak or you hear
an unusual noise. A fluid loss could indicate a
problem. Have it inspe ...
Turn and Lane-Change Signals
Move the lever all the way up or down to signal a turn.
An arrow on the instrument panel cluster flashes in the direction of the turn or lane change.
Raise or lower the lever until the arrow sta ...
Compass Variance (Zone) Procedure
1. Do not set the compass zone when the vehicle is
moving. Only set it when the vehicle is in P (Park).
Press the vehicle information button until PRESS
TO CHANGE COMPASS ZONE displays.
2. Fi ...