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 Symptoms - Entertainment

2

  1. Play the radio at a nominal operating volume.
  2. Compare the listening level with another vehicle.

Does the Radio/Audio system operate normally?

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

Go to Step 3

3

Test for an open in the right rear low level audio signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 5

Go to Step 4

4

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

If a poor connection is not found, service the radio. Refer to Radio Replacement .

Did you complete the repair?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2