GM Service Manual Online
For 1990-2009 cars only

Notice: Do not attempt to insert any disc into a CD player except those discs which display the symbol shown on the disc label illustration. Insertion of a disc which does not display this symbol, such as the 76 mm (3 in) disc, may cause damage to the CD player and/or disc.


Object Number: 258791  Size: SH

Power Cycling, CD Player

If the CD player is playing when the ignition voltage is removed from the radio, upon voltage return the following actions occur:

    • The CD player resumes playing from the position reached prior to the ignition shut off.
    • The radio display shows the track selected and CD is lit.
    • After 5 seconds the time of day will be displayed.

If the radio is turned off when the ignition voltage is removed from the radio, upon voltage return, the radio display shows the time of day and CD IN is lit.

When the radio is turned back on the following action occur:

    • The CD player resumes playing from the position reached prior to radio shut off.
    • The radio display shows the track selected and CD is lit.
    • After 5 seconds the time of day will be displayed.

Power Cycling, CD Changer

If the CD changer is playing when the ignition voltage is removed from the radio, upon voltage return the following actions occur:

    • The CD player resumes playing from the position reached prior to the ignition shut off.
    • The radio display shows the track selected and CHANGER is lit.
    • After 5 seconds the time of day will be displayed.

If the radio is turned off when the ignition voltage is removed from the radio, upon voltage return, the radio display shows the time of day and CHANGER is lit.

When the radio is turned back on the following action occur:

    • The CD player resumes playing from the position reached prior to radio shut off.
    • The radio display shows the track selected and CHANGER is lit.
    • After 5 seconds the time of day will be displayed.

CD Load, CD Player

The CD player will automatically complete the loading cycle after you insert a CD approximately 1/2 of the way into the CD player. The CD player will begin playing track 1 on the disc.

If the CD player is not presently loaded, the CD Load function is available at all times.

CD Load, CD Changer


Object Number: 493017  Size: SH

Load the CD into the cartridge tray (1), with the label surface facing up.


Object Number: 493016  Size: SH

The CD Changer cartridge (1) must be fully inserted and the CD changer door fully closed for the CD changer to load the first disc. The CD changer will shuffle through the cartridge trays in order to determine which trays contain discs. The CHNGR display will flash during this period.

CD Eject, CD Player

The CD eject function is active with battery voltage. You may eject the disc with the ignition switch in the OFF position. With the radio and ignition in the ON position, pressing the EJECT button mutes the disc and the audio switches to the previous radio function. The loading motors eject the disc. The CD IN indicator turns off.

At any time, with the radio or the ignition in the ON position or the OFF position, if you do not remove an ejected disc from the CD load mechanism within 25 seconds the disc will automatically reload. The play mode will not activate.

CD Eject, CD Changer

The cartridge eject function is active with battery voltage. You may eject the cartridge with the ignition switch in the OFF position. With the radio and ignition in the ON position, opening the CD changer cartridge door mutes the disc and the audio switches to the previous radio function. The loading motors eject the cartridge. The CHNGR indicator turns off.

Source Button (SOURCE)

Press the Source button in order to switch between the radio, CD player, CD changer, and the tape. The radio will begin playing the selected item within 2 seconds after the SOURCE button is pressed. The radio will display the time of day after 5 seconds if no other buttons have been pressed. The following appear on the radio display when each is activated:

    • Radio - Radio station
    • CD player - PLAY, CD, and track number
    • CD changer - PLAY, CHNGR, TRACK, track and disc number
    • Tape player - PLAY and < or >, depends on direction of tape

Recall Button (RECALL)

Press the RECALL button in order to display the current track number or current tract and disc number on the CD changer.

Pressing the button a second time within 5 seconds displays the length of time that the current track has been playing.

Pressing the button a third time within 5 seconds displays the time of day.

If successive depression of the RECALL button exceed the 5 second intervals, the display defaults to the time of day.

Stop

The following functions stop the CD player playing:

    • The AM/FM button
    • The SOURCE button
    • Ejecting a disc
    • Loading a tape

The following functions stop the CD changer playing:

    • The AM/FM button
    • The SOURCE button
    • Ejecting the cartridge
    • Loading a tape
    • Loading a CD into the CD player

Press the AM/FM button in order to switch the unit to the radio mode. This will display the last frequency and band selected. The SOURCE button switches the unit to cassette mode only on dual playback units with a cassette loaded. Load a tape in order to switch the unit to the cassette mode. Eject the disc, or CD changer cartridge in order to switch the unit to the tuner mode.

Previous Selection Button (PREV)

The PREV button moves the player and starts playback of the current track unless elapsed time is less than 8 seconds. If the elapsed time is less than 8 seconds, the player moves to the previous track. If the player is in random mode, the previous track is the track before the current track in the random library.

Next Select Button (NEXT)

Press the NEXT button in order to advance the player to the next track. If the player is in random mode, the next track is the subsequent preselected track in the random library.

SEEK Down

Operated the same as the PREV button when a CD is playing.

SEEK Up

Operated the same as the NEXT button when a CD is playing.

Random (RAND)

The Random (RAND) button, if equipped, is a non-latching control. The RAND button that serves a dual function with one of the radio presets. Press the RAND function in the CD play mode, in order to stop playing the current selection while the microcomputer chooses a random playback order. Play then resumes, the tracks play in the random order that was chosen. When the final selection has been played, the unit continues playing in the original random order. Press the random push-button at any point during random playback in order to continue in the normal sequence beginning with the current track. For remote CD changer options, the Random feature operates between the tracks on all of the available discs. RAND is displayed when the feature is active.

Fast Reverse (<<)

The << (fast reverse) button is a non-latching momentary contact control. The REV button serves a dual function with a radio preset button. The radio preset button is a press and hold type button. The button allows reverse movement within the disc at a faster rate than normal playback rate as long as the button is held. When activated, the audio level reduces by 6dB. The disc plays in the reverse direction at a rate of 6 times normal speed. Elapsed time within the selected track displays while in the << mode. The following items display after you release the << button:

    • The track number (disc number in CD applications)
    • The user selected default

Fast Forward (>>)

The >> (fast forward) button is a non-latching momentary contact control. The FWD button serves a dual function with a radio preset button. The radio preset button is a press and hold type button. The button allows forward movement within the disc at a faster rate than normal playback rate as long as the button is held. When activated, the audio level reduces by 6dB. The disc plays in the forward direction at a rate of 6 times normal speed. Elapsed time within the selected track displays while in the FWD mode. The following items display after you release the FWD button:

    • The track number (disc number in CD applications)
    • The user selected default

Disc Select (CD Changer)

For CD changer applications, the radio SIDE button functions as disc select when you are in the CD mode. Each momentary button press increments the disc number by one, starting from the presently selected disc or at the lowest numbered disc, if a disc had not been previously selected. The disc count wraps back to the first available disc after the last disc is selected. Only the cartridge slot numbers with discs installed are available for selection. During the selection process the following actions occur:

    • The disc number displays.
    • Track number 1 is displayed.
    • The audio mutes.

The disc and track numbers always display simultaneously. The disk and track numbers continue to display for 5 seconds after you select a disc. This function replicates on models that are equipped with steering wheel controls.

Error (ERR) Detection, CD player

The radio display indicates an ERR in the display if any of the following conditions exist:

    • Moisture impairs the focusing mechanism.
    • A tracking problem occurs.
    • A servo problem occurs.
    • A disc is inserted upside down.

The ERR remains lit in the display for 5 seconds, along with the normal information.

If you insert a CD upside down, the following actions occur:

    • 00 appears in the display
    • E30 when the cd is selected to be played.

The ERR graphics turn off under one of the following conditions:

    • 5 seconds expire
    • The radio becomes the active source.

The ERR display does not light unless the following conditions are true:

    • The CD player is active.
    • The CD player is in the play mode.

Error (ERR) Detection, CD changer

The radio display indicates an ERR in the display if any of the following conditions exist:

    • Moisture impairs the focusing mechanism.
    • A tracking problem occurs.
    • A servo problem occurs.
    • A disc has been inserted into the cartridge tray with the label surface facing down.

The ERR remains lit in the display for 5 seconds, along with the normal information. If you insert CD upside down, the following actions occur:

    • The CD player is not able to initialize.
    • The unit will not shift into the audio modes.
    • An ERR is lit in the display.
    • The disc ejects.

The ERR graphics turn off under one of the following conditions:

    • 5 seconds expire
    • The CD is reinserted correctly.

The ERR display does not light unless the following conditions are true:

    • The CD changer is active.
    • The CD changer is in the play mode.

Mode Switching

The unit changes status without popping on the audio lines. The lapses do not exceed 2 seconds between switching sources. After the initialization occurs there are no pauses.