GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting System Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Place the headlamp switch in the OFF position.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the high beam indicator on the instrument cluster.

Does the indicator illuminate during bulb test?

--

Go to Step 3

Go to Step 5

3

  1. Place the headlamp switch in the HIGH position.
  2. Observe the high beam indicator.

Does the high beam indicator illuminate?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 4

4

Do the high beam headlamps illuminate?

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Go to Step 6

Go to Diagnostic System Check - Lighting Systems

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Has the repair been made?

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Go to Step 7

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6

Repair a poor connection or an open in the high beam control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Has the repair been made?

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Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

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Go to Diagnostic System Check - Lighting Systems

Go to Step 2