GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: The roof rail reading lamps do not activate when the following conditions exist:

    • The interior courtesy lights are on.
    • The interior lamps override switch is on (the interior courtesy lights are enabled)

1

Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Operate all of the roof rail reading lamps.

Do all of the roof rail reading lamps work properly?

--

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Inspect the filament of the inoperative roof rail reading lamps bulb(s).

Is there any bulb filament open?

--

Go to Step 7

Go to Step 4

4

Test for an open in the supply voltage circuit to the inoperative roof rail reading lamp.

Did you find and correct the condition?

--

Go to Step 8

Go to Step 5

5

Test for an open in the ground(s) circuit to the inoperative roof rail reading lamp.

Did you find and correct the condition?

--

Go to Step 8

Go to Step 6

6

Replace the inoperative roof rail reading lamp.

Did you complete the repair?

--

Go to Step 8

--

7

Replace the inoperative roof rail reading lamp bulb(s).

Did you complete the repair?

--

Go to Step 8

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8

  1. Turn the ignition switch to the LOCK position.
  2. Reinstall any connectors or components that were removed.
  3. Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3