GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Radio/Navigation System Schematics

Connector End View Reference: Entertainment/Communication Connector End Views

1

Did you review the Radio/Audio System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Diagnostic Starting Point - Vehicle

2

  1. Insert a CD magazine with at least 1 audio CD into the CD player.
  2. Turn on the ignition, with the engine OFF.
  3. Turn ON the radio.
  4. Play the CD in the CD player.

Does the remote CD player play on both the left and right channels?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Test the appropriate (left or right) audio output for an open, short or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 4

4

Inspect for poor connections at the harness connector of the CD player. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Replace the CD player.

Did you complete the replacement?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2