GM Service Manual Online
For 1990-2009 cars only

Error Codes

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E20

CD Optics Focus Error

E21

CD Optics Loss of Tracking Control

E30

CD Changer Optics Focus Error

E31

CD Changer Optics Loss of Tracking Control

E34

CD Changer Door Open

If the error occurred while trying to play a CD in the compact disc player, the following conditions may have caused the error:

    • The road is too rough.
        The disc will play when the road is smoother.
    • The disc is dirty.
    • The disc is scratched.
    • The disc is wet.
    • The disc is upside down.
    • The air is very humid.
        Wait an hour and try again.
    • The CD player door is open.
        Completely close the door in order to restore normal operation.
    • An empty magazine is inserted in the CD player.
        Try the magazine again with a disc loaded on one of the trays.

Clear Button


Object Number: 311048  Size: SH

Press the clear button located at the top left corner on the CD player face if the following conditions exist:

    • The compact disc player does not operate.
    • The radio display is incorrect.
    • If further diagnosis is needed, refer to
      •  Speakers General Diagnosis .
      •  Audio Preliminary Diagnosis .
      •  Tape Player Diagnostic Check .