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. Operate the radio in order to verify the descrepancy.

Does the radio operate properly?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Insert a tape/CD into the radio.

Does the radio accept the tape/CD?

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Go to Step 4

Go to Step 5

4

  1. Disconnect the radio.
  2. Test the accessory voltage circuit for a short, 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 7

5

Test the battery possitive voltage circuit for a short, 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 6

6

Test the remote playback device voltage circuit for a short, 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 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 radio.Refer to Radio 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 complete the repair?

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System Ok

Go to Step 2