Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless service carrier.
• Press 
to answer an
incoming call when another call
is active. The original call is
placed on hold.
• Press again to return to
the original call.
• To ignore the incoming call, no action is required.
• Press 
to disconnect the
current call and switch to the call
on hold.
See also:
Starter Switch Check
WARNING:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems. It also
checks the tire pressures, if the v ...
Instrument Panel Brightness
(Instrument Panel Brightness):
This feature
controls the brightness of the instrument panel lights.
The knob for this control is located next to the exterior
lamps control.
Push the knob in a ...