GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the symptom list?

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Go to Step 2

Go to Symptoms

2

  1. Verify that the Theftlock® is not active.
  2. Inspect 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 battery fuse and the radio fuse for one 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 Step 4

Go to Symptoms

4

Replace the radio. Refer to Radio Replacement .

Is the replacement complete?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Is the repair complete?

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Go to Symptoms

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