GM Service Manual Online
For 1990-2009 cars only

The navigation system has an auxiliary input jack located in the upper right corner of the faceplate. This is not an audio output; do not plug the headphone set into the front auxiliary input jack. You can however, connect an external audio device such as an iPod, laptop computer, MP3 player, CD changer, or cassette tape player, etc. to the auxiliary input jack for use as another source for audio listening.

Drivers are encouraged to set up any auxiliary device while the vehicle is in PARK (P). See "Defensive Driving" in the Index of your vehicles owner manual for more information on driver distraction.

If your vehicle has rear audio/video input jacks, located in the rear of the center console, they can be used as another source for audio/video listening.

To use a portable audio player, connect a 3.5 mm (1/8 inch) cable to the auxiliary input jack. When a device is connected, the system will detect and automatically begin playing audio from the device over the vehicle's speakers.

If a device is connected and you are listening to another source (FM, CD, MP3, etc.), press the AUDIO key then press the AUDIO key repeatedly until AUX is selected or touch the AUX screen button. An auxiliary device must be connected for the AUX screen button to appear as an option to select or the vehicle must have rear auxiliary jacks. See "Rear Seat Entertainment System" in the Index of your vehicle's owner manual for more information on the rear auxiliary jacks.