Reading Lamp(s) Inoperative

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Interior Lights Schematics or Body Control System Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Turn ON the reading lamps. Does the system operate normally?	Go to Testing for Electrical Intermittents	Go to Step 3
3	Are all of the reading, visor, and I/P compartment lamps inoperative?	Go to Step 4	Go to Step 6
4	Is the TBC 2C Fuse in the I/P fuse block open?	Go to Step 5	Go to Step 6
5	Test the battery positive voltage circuit of the body control module (BCM) for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 12	Go to Step 9
6	Test the inadvertent power supply voltage circuit of the reading lamp for a short to ground, high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 12	Go to Step 7
7	Test the ground circuit of the reading lamp for high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 12	Go to Step 8
8	Inspect the inoperative bulb for an open filament. Is the bulb OK.	Go to Step 7	Go to Step 6
9	Repair the inadvertent power supply voltage circuit for a short to ground. Refer to Wiring Repairs . Did you complete the repair?	Go to Step 12	-
10	Replace the inoperative bulb. Refer to Overhead Console Reading Lamp and Bulb Replacement . Did you complete the replacement?	Go to Step 12	-
11	Replace the dome lamp. Refer to Dome Lamp Replacement . Did you complete the replacement?	Go to Step 12	-
12	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3