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:
Entering the Personalization Menus
1. Press CONFIG to access the Configuration Settings menu.
2. Turn the TUNE/MENU knob to highlight Vehicle Settings. Press the CONFIG button
until Vehicle is highlighted on vehicles with a navigati ...
3.5mm Jack
Connect a 3.5mm (1/8 in) cable to the auxiliary input jack to use a portable
audio player.
Playback of an audio device that is connected to the 3.5mm jack can only be controlled
using the control ...
Tachometer
The tachometer
displays the engine
speed in revolutions
per minute (rpm). ...