Backup Lamps Inoperative

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to DIAGNOSTIC SYSTEM CHECK - VEHICLE
2	Turn the ignition to the ON position. Place the gear selector lever to the REVERSE position. Do both backup lamps illuminate?	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 3
3	Is only one lamp inoperative?	Go to Step 9	Go to Step 4
4	Disconnect the backup lamp relay. Probe the switch side battery positive voltage circuit of the backup lamp relay with a test lamp that is connected to a good ground. Does the test lamp illuminate?	Go to Step 5	Go to Step 7
5	Connect a 10-amp fused jumper between the switch side battery positive voltage circuit of the backup lamp relay and the backup lamp voltage supply circuit of the backup lamp relay. Do the backup lamps illuminate?	Go to Step 8	Go to Step 6
6	Test for an open or high resistance in the backup lamp voltage supply circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 12	Go to Step 7
7	Inspect for poor connections at the fuse block - rear. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 12	Go to Step 10
8	Inspect for poor connections at the backup lamp relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 12	Go to Step 11
9	Repair an open, high resistance, or short to ground in the backup lamp voltage supply circuit or the ground circuit of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair?	Go to Step 12	-
10	Replace the fuse block - rear. Did you complete the replacement?	Go to Step 12	-
11	Replace the backup lamp relay. Refer to Relay Replacement (Attached to Wire Harness) or Relay Replacement (Within an Electrical Center) . 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 2