GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Radio/Audio System Schematics

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

Does the radio turn ON and OFF?

Go to Step 4

Go to Step 3

3

Service the radio. Refer to Radio Replacement .

Is the repair complete?

Go to Step 6

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4

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

Does the radio display LOC?

Go to Step 5

Go to Step 6

5

Unlock the theft deterrent feature. Refer to Radio/Audio System Description and Operation for more information.

Is the procedure complete?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2