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

Go to Radio/Audio System Check

2

  1. Place the ignition switch in RUN.
  2. Disconnect connector C1 at the radio.
  3. Connect an unpowered test lamp between radio connector C1 cavity 9 for CKT 43 (YEL) and ground.

Did the test lamp light?

--

Go to Step 3

Go to Step 5

3

Connect an unpowerd test lamp between radio connector C1 cavity 10 for CKT 1140 (ORN) and ground.

Did the test lamp light?

--

Go to Step 4

Go to Step 6

4

Connect a digital multimeter J 39200 between radio connector C1 cavity 5 for CKT 150 (BLK) and ground.

Is continuity present?

--

Go to Step 7

Go to Step 8

5

Repair the open in CKT 43 (YEL) between the IP fuse block and the radio.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Radio/Audio System Check

--

6

Repair the open in CKT 1140 (ORN) between the IP fuse block and the radio.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Radio/Audio System Check

--

7

Remove the radio and send it in for repair.

Refer to Radio Replacement .

Is the repair complete?

--

Go to Radio/Audio System Check

--

8

Repair the open in CKT 150 (BLK) between the radio and ground G201.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Radio/Audio System Check

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