GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Radio/Audio System Check?

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Go to Step 2

Go to Diagnostic System Check - Radio/Audio System

2

Test the radio for correct operation.

Does the radio turn ON and OFF?

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Go to Step 3

Go to Step 4

3

  1. Turn the ignition to the OFF position.
  2. Remove the RADIO, HVAC fuse and the RADIO fuse for 1 minute, then reinstall the fuses.
  3. Turn the ignition to the RUN position.
  4. Turn the radio ON.

Does the radio display LOC?

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Go to Diagnostic System Check - Radio/Audio System

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4

Replace the radio. Refer to Radio Replacement for service procedure.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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