GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

  1. Inspect the right low beam headlamp bulb for damage or an open filament.
  2. Inspect the right low beam headlamp connector seats for damage or an poor terminal connection.

Are the headlamp bulbs and the connectors OK?

Go to Step 2

Go to Step 7

2

  1. Turn the headlamp switch to the HEAD position.
  2. Turn the headlamp dimmer switch to the LOW position.
  3. Using a test lamp, backprobe between the right low beam headlamp harness connector terminal A and ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 3

3

Repair the poor connection or an open in circuit 12 between S104 and the right low beam harness connector terminal A.

Has the repair been made?

Go to Headlight System Check

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4

Using a test lamp, backprobe between the right low beam headlamp harness connector terminal A and B.

Does the test lamp illuminate?

Go to Step 6

Go to Step 5

5

Repair the poor connection or an open in circuit 1250 between the right low beam headlamp harness connector terminal B and G102.

Has the repair been made?

Go to Headlight System Check

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6

Replace the right low beam headlamp. Refer to Headlamp Assembly or Headlamp Bulb and/or Cornering, Sidemarker, Park, Turn Signal Bulb Replacement .

Has the repair been made?

Go to Headlight System Check

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7

Replace the damaged component.

Has the repair been made?

Go to Headlight System Check

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