GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Radio/Audio System Schematics

Connector End Views Reference: Entertainment Connector End Views

1

Did you perform A Diagnostic System Check - Radio/Audio System?

Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

2

  1. Insert a CD magazine with at least one audio CD into the CD changer.
  2. Turn ON the ignition, with the engine OFF.
  3. Turn ON the radio.
  4. Attempt to play the CD in the CD changer.

Does the CD play without noise?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the CD changer.
  2. Inspect for poor connections at the harness connector of the CD changer. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 4

4

  1. Remove the radio.
  2. Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 5

5

Test the drain wire for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 6

6

Test the remote radio audio output (-) circuit for a short, high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 7

7

Inspect the audio harness shield for damage.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

8

Replace the CD changer. Refer to Remote Compact Disc Player Replacement .

Did you complete the replacement?

Go to Step 9

--

9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3