GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Test for a short to battery in the instrument panel dimming lamps circuit (8) between the lamp dimmer module and the right IP junction block. (Turn the ignition on when testing for a short to battery.) Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

System OK

Go to Step 3

3

Test for a short to battery CKT 44 between the dimmer switch and the lamp dimmer module. (Turn the ignition on when testing for a short to battery.) Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

System OK

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems