GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Schematic Reference: Radio/Audio System Schematics

1

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

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Go to Step 2

Go to Radio/Audio System Description and Radio/Audio System Operation

2

  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the radio.
  3. Insert a Tape/CD or CD magazine, with at least 1 audio CD inside, into the remote playback device.
  4. Operate the remote playback device.

Does the remote playback device operate without audio noise?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Disconnect the remote playback device.
  2. Test the shield ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in wiring systems.

Did you find and correct the condition?

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Go to Step 9

Go to Step 4

4

Test the common audio input 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?

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Go to Step 9

Go to Step 5

5

Inspect the audio harness shield for damage.Refer to Circuit Testing and Wiring Repairs in wiring systems.

Did you find and correct the condition?

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Go to Step 9

Go to Step 6

6

Inspect for poor connections at the harness connector of the remote playback device. Refer to Testing for Intermittent Conditions and Poor Connections in wiring systems.

Did you find and correct the condition?

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Go to Step 9

Go to Step 7

7

Inspect for poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections in wiring systems.

Did you find and correct the condition?

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Go to Step 9

Go to Step 8

8

Replace the remote playback device. Refer to Remote Compact Disc Player Replacement for service procedure.

Did you complete the replacement?

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Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2