GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was A Diagnostic System Check performed?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Turn the ignition switch to the ON position.
  2. Turn the turn/hazard - headlamp switch assembly to the HEAD position.
  3. Disconnect the license lamp connector.
  4. Connect a test lamp between the park lamp feed circuit of the license lamp harness connector and ground.

Does the test lamp light?

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Go to Step 3

Go to Step 4

3

Connect a test lamp between the park lamp feed circuit and the ground circuit of the license lamp harness connector.

Does the test lamp light?

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Go to Step 5

Go to Step 6

4

Repair open in the parking lamp feed circuit. Refer to Wiring Repairs

Is repair complete?

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System OK

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5

Replace the license bulb.

Is the repair complete?

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System OK

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6

Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

System OK

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