GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Radio/Audio System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Entertainment

2

Verify that the radio displays LOC.

Does the radio display LOC?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3

  1. Remove the DOME and CIG fuses for one minute.
  2. Reinstall the fuses.

Does the radio continue to display LOC?

Go to Step 4

Go to Step 5

4

Replace the radio. Refer to Radio Replacement .

Did you replace the radio?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3