OnStar Services
See also:
Lumbar Adjustment
To adjust the lumbar support:
Press and hold the front or rear of the control to increase or decrease
lumbar support.
Press and hold the top or bottom of the control to raise or lower the
...
Programming the Power Windows
If the vehicle battery has been
recharged, disconnected or not
working, the front power windows
will need to be reprogrammed for
the express-up feature to work.
Before reprogramming, replace ...
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the vehicle's engine power is reduced.
Reduced engine power can affect the vehicle's ability to accelerate.
If this message is on, but there ...






