GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Exterior Lights System Check?

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Go to Step 2

Go to Exterior Lights System Check

2

  1. Disconnect the headlamp and panel dimmer switch.
  2. Connect a test lamp J 35616-200 from CKT 240 (ORN) cavity H at the headlamp and panel dimmer switch to ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Connect a fused jumper between CKT 240 (ORN) cavity H to CKT 9 (BRN) cavity S of the headlamp and panel dimmer switch.

Do the inoperative lamps light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 240 (ORN) from the headlamp and panel dimmer switch to the instrument panel fuse block.

Is the repair complete?

--

Go to Exterior Lights System Check

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5

Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement .

Is the replacement complete?

--

Go to Exterior Lights System Check

--

6

Repair the open in CKT 9 (BRN) between the headlamp and panel dimmer switch and the affected lamp(s).

Is the repair complete?

--

Go to Exterior Lights System Check

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