GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect the radio for correct operation.

Does the radio turn ON and OFF?

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Go to Step 2

Go to Step 3

2

  1. Turn the ignition to the OFF position.
  2. Remove the Fuse E1-E2 and the Fuse J7-J8 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?

--

Go to Step 3

System OK

3

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

Is the repair complete?

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Go to Diagnostic System Check - Radio/Audio System

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