GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Does the radio turn ON and OFF?

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Go to Step 3

Go to Step 2

2

Service 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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3

  1. Turn the ignition switch off.
  2. Remove the RADIO-HVAC fuse and the RADIO-CRUISE fuse for one minute, then reinstall the fuses.
  3. Turn the ignition switch on.
  4. Turn the radio ON.

Does the radio display LOC?

--

Go to Step 4

Go to Diagnostic System Check - Radio/Audio System

4

Refer to Radio/Audio System Operation-Theftlock for more information.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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