Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard.
If the light next to the OnStar buttons is red, the system may not be functioning properly. Push 
and request a vehicle diagnostic check. If the light appears clear (no light appears), your OnStar subscription has expired and all services have been deactivated.
Push to confirm that the OnStar equipment is active.
See also:
Reading Lamps
There are front and rear reading
lamps.
The front reading lamps are located
in the overhead console.
The rear reading lamps are located
in the headliner.
or
: Press to turn each lamp
...
Recommended Fluids and Lubricants
Usage
Fluid/Lubrican
Engine Oil
The engine requires engine oil approved to the dexos specification.
Oils meeting this specification can be identified with the dexos
cer ...
Exterior Lighting
The exterior lamp control is located
on the instrument panel on the
outboard side of the steering wheel.
Turn the control to the following
positions:
: Turns off the exterior lamps.
The kn ...