GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: The windshield header courtesy/reading lamps stay on with all the doors closed, the IP dimmer switch off, the windshield header courtesy/reading lamp switches off, and none of the interior lighting modes activated. The inadvertent load (battery rundown) protection turns off the windshield header courtesy/reading lamps after 10 minutes.

1

Was the Interior Lamps System Check performed?

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Go to Step 2

Go to Interior Lamps System Check

2

  1. Close all of the vehicle doors.
  2. Turn off the IP dimmer switch.
  3. Turn the ignition switch to the RUN position.
  4. Cycle (on/off) the switches for the windshield header courtesy/reading lamps.

Do the windshield header courtesy/reading lamps turn off?

--

System OK

Go to Step 3

3

Replace the windshield header courtesy/reading lamps assembly.

Is the repair complete?

--

System OK

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