GM Service Manual Online
For 1990-2009 cars only

The stereo digital logic cassette AM/FM radio with electronic tape ejection and the stereo digital logic cassette AM/FM radio with a CD changer located under the front seat (LH) are optional equipment.

The radio data system (RDS) uses a single button to select a specific radio station once it is set to the listener's preference.

The audio security system is activated whenever the audio system circuit is disconnected from the battery. A 4-digit security code must be entered in order for the audio system to be functional once again. The security code is stamped on a card located in the vehicle (usually in the glove box). One of the following security code entering procedures can be followed.

With RDS

  1. With the ignition switch in the I or II position, turn the radio ON. At this time, "CODE" will be shown on the radio display.
  2. Press the P-UP button until the correct first digit is shown on the display.
  3. Press the P-DN button to move over to the second digit and then press P-UP once again to enter the correct second digit.
  4. Use steps 2 and 3 to enter the third and fourth digits using the same method.
  5. After entering the correct 4-digit security code, press the TP button. "CODE OK" will briefly appear on the radio display, and the system is ready for use.

Wrong Code

If the wrong code is entered, "ERROR 1" will appear on the display. After this, "CODE" will appear once again, and the correct security code can be entered. The time between each new coding attempt is doubled; a total of 10 coding attempts can be made.

Front and Rear Speakers

All audio systems use 4 speakers: 2 speakers mounted in the front doors and 2 speakers mounted in the rear parcel side shelf.

Roof Antenna

The roof antenna is located on the roof and is designed to separate the antenna pole from the antenna base. The antenna pole should be removed before washing the vehicle to prevent paint damage. The roof antenna cannot be adjusted.

Tape Player and Cassette Care

The head and the capstan are the 2 parts of the tape player that should be cleaned. This service should be performed every 100 hours of cassette operation.

In order to clean the head and the capstan, use a cotton swab dipped in rubbing alcohol.

A cassette cleaning kit may also be used to clean the head and the capstan. Follow the cleaning kit instructions to clean the tape player.

Important: Do not touch the tape head with magnetized tools. If the head becomes magnetized, it will degrade cassettes played in the player.

No service is performed on the cassettes. The cassette manufacturer handles warranties of the cassettes. Store cassettes away from extreme heat and direct sunlight.

Compact Disc Care

Handle discs carefully. Store the discs in protective cases away from the sun, heat, and dust. If the surface is soiled, dampen a clean, soft cloth in a solution of mild neutral detergent and wipe the disc clean. Mini discs, about 3 inches in diameter, will not eject and should not be used.