Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Service All-Wheel Drive Light
This light should come
on briefly when you turn
on the ignition, as a
check to show you it
is working.
The service all-wheel drive light comes on to
indicate that there may be a problem with ...
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the engine oil needs to be changed.
When you change the engine oil, be sure to reset the Oil Life System.
See Engine Oil Life System and Driv ...
ENGINE OIL LOW — ADD OIL
This message displays when the
engine oil level is too low. Check the
oil level. See Engine Oil. ...