GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Radio/Audio System Check performed?

--

Go to Step 2

Refer to Radio/Audio System Check

2

  1. Disconnect the radio connector.
  2. Turn the headlamp switch to the PKLP position.
  3. Turn the instrument panel, (IP) dimmer switch to a mid-range position.
  4. Connect a test lamp from CKT 1220 (GRY) at radio connector cavity F4 to ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

  1. Remove the radio.
  2. Send the radio in for repair.

Is the repair complete?

--

Refer to Radio/Audio System Check

--

4

Locate and repair the open in CKT 1220 (GRY) between the radio and splice S205.

Is the repair complete?

--

Refer to Radio/Audio System Check

--