GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Has the Radio/Audio System Check been performed?

--

Go to Step 2

Go to Radio/Audio System Check

2

  1. Disconnect the radio connector C1.
  2. Connect a test lamp from CKT 1140 (ORN) at the radio connector cavity 10 to ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

Repair the open in CKT 8 (GRY) located between radio connector cavity 7 and the fuse block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Radio/Audio System Check

--

4

  1. Place the ignition to the RUN position.
  2. Connect a test lamp from cavity 9 of connector C1 to ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

5

Locate and repair the open in CKT 43 (YEL) between the IP fuse block and the radio connector C1.

Is the repair complete?

--

Go to Radio/Audio System Check

--

6

Connect a test lamp from cavity 5 of the radio connector C1 and B+.

Does the test lamp light?

--

Go to Radio/Audio System Check

Go to Step 7

7

Locate and repair the open in CKT 150 (BLK) between the radio and ground G200.

Is the repair complete?

--

Go to Radio/Audio System Check

--

8

Send the radio in for repair.

Is the repair complete?

--

Go to Radio/Audio System Check

--