GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the System Check?

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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:

    • Proper insertion
    • Scratches
    • Dirt
    • Finger prints
        Clean the disc, if necessary.

Does the CD changer operate properly?

--

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 a dirt road. If so, the condition may be normal.
  2. Test the condition when driving over a good road surface.

Does the CD changer operate properly?

--

Go to Radio/Audio System Check

Go to Step 5

5

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

Test the compact disc using a known good CD changer, preferably using a new disc.

Does the CD changer operate properly?

--

Go to Radio/Audio System Check

Go to Step 6

6

Service the CD changer.

Does the CD changer operate properly?

--

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?

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Go to Step 8

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8

  1. Inspect the disc for the following conditions which may cause ERR to display:
  2. • Inserted upside down
    • Dirty
    • Badly scratched
    • Wet
  3. Inspect the disc for moisture condensation. This may be caused by inserting a cold disc into a hot player. Allow up to an hour in order to evaporate condensation.
  4. Test the condition using a known good disc. Verify to the customer.
  5. Very high internal temperatures may cause the disc to eject.

Verify the above conditions and correct any problems you find.

Does the CD changer operate properly?

--

Go to Radio/Audio System Check

Go to Step 9

9

Service the CD changer.

Does the CD changer operate properly?

--

Go to Radio/Audio System Check

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