GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Does the radio turn ON and OFF?

--

Go to Step 3

Go to Step 2

2

Service the radio. Refer to Radio Replacement .

Is the repair complete?

--

Go to Step 5

--

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 Step 5

4

Unlock the theft deterrent feature. Refer to Radio/Audio System Operation-Theftlock in Entertainment for more information.

Is the procedure complete?

--

Go to Step 5

--

5

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 1