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:
How to Check Lubricant
To get an accurate reading, the vehicle should be on a level surface.
For Two-Wheel-Drive vehicles, the proper level is from 15mm to 40mm (0.6
in to 1.6 in) below the bottom of the filler plu ...
Safety Locks
Rear door safety locks prevent passengers from opening the rear doors from
the inside.
Press to activate the safety locks, the LED in the switch illuminates.
Press to deactivate the safety ...
SERVICE BATTERY CHARGING SYSTEM
This message displays when there
is a problem with the generator and
battery charging systems. Driving
with this problem could drain the
battery. Turn off all unnecessary
accessories. Stop a ...