GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you perform the System Check?

--

Go to Step 2

Go to Radio/Audio System Check

2

  1. Insert the compact disc (CD).
  2. Inspect the CD changer for the following conditions:
  3. • Skipping
    • Muting

Do either of these conditions exist?

--

Go to Step 3

Go to Step 7

3

Inspect the compact disc for the following conditions:

    • Correct insertion
    • Scratches
    • Dirt
    • Fingerprints
        Clean the disc, if necessary.

Does the CD changer operate correctly?

--

Go to Radio/Audio System Check

Go to Step 4

4

  1. Verify whether the vehicle's usual route is over a rough road or over a dirt road. If so, the condition may be normal.
  2. Test the condition on a good road surface.

Does the CD changer operate correctly?

--

Go to Radio/Audio System Check

Go to Step 5

5

Some discs may contain marks that are not visible. One track or the entire disc may not play.

Test the compact disc using a known good CD changer.

Does the CD changer operate correctly?

--

Go to Radio/Audio System Check

Go to Step 6

6

Service the CD changer.

Does the CD changer operate correctly?

--

Go to Radio/Audio System Check

--

7

Inspect the CD changer for the following conditions:

    • ERR display
    • Disc ejection

Do either of the above conditions exist?

--

Go to Step 8

--

8

  1. Inspect the disc for the following conditions which may cause ERR to display:
  2. • Incorrectly inserted
    • Dirty
    • Scratched
    • Wet
  3. Inspect the disc for moisture condensation. This may be caused by inserting a cold disc into a hot CD player. Wait an hour for the evaporation of the condensation.
  4. Test the condition using a known good disc. Verify the condition to the customer.
  5. Very high internal temperatures may cause the disc to eject.

Verify the above conditions, and correct any conditions.

Does the CD changer operate correctly?

--

Go to Radio/Audio System Check

Go to Step 9

9

Service the CD changer.

Does the CD changer operate correctly?

--

Go to Radio/Audio System Check

--