GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Headlights System Check?

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Go to Step 2

Go to Headlight System Check

2

  1. Disconnect the right low beam headlamp connector.
  2. Connect a J 39200 DMM between the right low beam headlamp connector, cavity A (base), cavity B (quad) for CKT 250 (BLK), and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

  1. Place the headlamp and panel dimmer switch in the headlamp position.
  2. Operate the headlamp dimmer switch in order to select the low beam position.
  3. Connect a J 35616-200 test lamp between the right low beam headlamp connector, cavity B (base), cavity A (quad) for CKT 12 (TAN), and ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 250 (BLK) between the right low beam headlamp and G112.

Is the repair complete?

--

Go to Headlight System Check

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5

If the filament is not open, replace the right low beam headlamp socket.

Is the repair complete?

--

Go to Headlight System Check

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6

Repair the open in CKT 12 (TAN) between S120 and the right low beam headlamp.

Is the repair complete?

--

Go to Headlight System Check

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