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Reading Lamp(s) Inoperative

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Reading Lamp(s) Inoperative

Step Action Yes No
Schematic Reference: Interior Lights Schematics 
Connector End View Reference: Master Electrical Component List in Wiring Systems
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 Place the inoperative reading lamp in the ON position.
Does the reading lamp operate properly?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Does the courtesy lamp function of the inoperative reading lamp operate properly? Go to Step 4  Go to Courtesy Lamps Inoperative 
4
  1. Disconnect the inoperative reading switch.
  2. Using a test lamp connected to battery positive voltage, probe the ground circuit of the reading lamp switch.
Does the test lamp illuminate?
Go to Step 5  Go to Step 7 
5 Test for a poor connection or an open in the reading lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 9  Go to Step 6 
6 Inspect for poor connections at the harness connector of the reading lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 9  Go to Step 8 
7 Repair an open or high resistance in the ground circuit of the reading lamp switches. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you correct the condition?
Go to Step 9  -
8 Replace the inoperative reading lamp. Refer to Roof Side Rail Lamp Replacement .
Did you complete the replacement?
Go to Step 9  -
9 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 2