GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect the harness connector C105.
  2. Set the headlamp switch to the PARK position.
  3. Connect a test lamp between terminal A in the C105 front chassis harness connector and ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2

Connect a test lamp between terminals A and D on the C105 front chassis harness connector.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 9 (BRN) between S126 and terminal A in the C105 front chassis harness connector.

Is the repair complete?

--

System OK

--

4

  1. Disconnect the harness connector from the right front park/turn lamp assembly.
  2. Connect a DMM between terminal B in the right front park/turn lamp harness connector and terminal D in the C105 front turn signal harness connector.

Does the DMM indicate continuity?

--

Go to Step 6

Go to Step 7

5

Repair the open in CKT 150 (BLK) between G107 and terminal D in the front chassis harness connector C105.

Is the repair complete?

--

System OK

--

6

Repair the open in CKT 150 (BLK) between S105 and terminal D in the front turn signal harness connector C105.

Is the repair complete?

--

System OK

--

7

Repair the open in CKT 9 (BRN) between S102 and terminal A in the front turn signal harness connector.

Is the repair complete?

--

System OK

--