GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Using a test lamp backprobe between the headlamp switch connector terminal N and the ground.

Does the test lamp illuminate?

Go to Step  2

Go to Step  3

2

Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Is the repair complete?

Go to Step  4

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3

Repair the poor connection or open in circuit 442.

Is the repair complete?

Go to Step  4

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4

  1. Turn the ignition switch to the LOCK position.
  2. Reconnect any of the connectors or components that were removed.

Have all repairs been made?

Go to Interior Lamps System Check

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