GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 GTO 🢒 Accessories 🢒 Entertainment 🢒 DTC 22

Conditions for Setting the DTC

With the ignition in either the Accessories position or the On position, DTC 22 will set to indicate that an error message has been received from the CD Changer due to a disc playing error. This error is due to problems in reading the CD, and it may be set due to the following actions:

    • CD was loaded upside down.
    • CD mechanism was unable to play it.
    • Computer Data CD was loaded.
    • CD mechanism was unable to play it.
    • Disc was badly damaged and could not be read.
    • Disc was blank.
    • Conditions were too severe for the CD Changer to read the CD. For example, too much vibration.

The DTC will remain set even though a faulty CD might have been removed already or the fault was cleared.

Step

Action

Yes

No

1
  1. Eject all CDs from the unit.
  2. Load a known good CD.

Does the CD play correctly?

Go to Step 2

Go to Step 3

2
  1. Turn OFF the ignition.
  2. Connect TECH 2 to the Data Link Connector.
  3. Select Diagnostics / Model Year / Vehicle Model / Body / Audio System / Diagnostic Trouble Codes / Clear DTC Information.
  4. Play a CD for 30 minutes.

Does the DTC set again?

Go to Step 3

System OK

3

Replace the radio. Refer to Radio Replacement .

Did you complete the repair?

Go to Step 4

--

4
  1. Use the scan tool in order to clear the DTCs.
  2. Turn the ignition OFF, then ON again and wait 30 seconds with the radio ON.

Does the DTC reset?

Go to Step 1

System OK