Power Mirrors - Folding Inoperative

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Outside Mirror Schematics
1	Did you review the Outside Mirror Description and Operation?	Go to Step 2	Go to Symptoms - Doors
2	Activate the outside rearview folding mirror switch in both the extend and retract positions. Do both folding mirrors operate properly?	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	Are both the left and right folding mirrors completely inoperative?	Go to Step 4	Go to Step 7
4	Disconnect the outside rearview folding mirror switch. Connect a test lamp between the battery positive voltage circuit at the outside rearview folding mirror switch harness connector and a good ground. Does the test lamp illuminate?	Go to Step 5	Go to Step 12
5	Connect a test lamp between the battery positive voltage circuit and the ground circuit at the outside rearview folding mirror switch harness connector. Does the test lamp illuminate?	Go to Step 6	Go to Step 11
6	Connect the outside rearview folding mirror switch. Connect a test lamp to a good ground. Probe the folding mirror motor extend circuit at the outside rearview folding mirror switch harness connector. Activate the outside rearview folding mirror switch in the extend position and note the test lamp. Probe the folding mirror motor retract circuit at the outside rearview folding mirror switch harness connector. Activate the outside rearview folding mirror switch in the retract position and note the test lamp. Does the test lamp illuminate in both positions?	Go to Step 8	Go to Step 9
7	Disconnect the appropriate folding mirror. Connect a test lamp between the folding mirror motor extend and retract circuits. Operate the outside rearview folding mirror switch in both the extend and retract directions. Does the test lamp illuminate in both directions?	Go to Step 10	Go to Step 13
8	Test for an open, short to ground or battery in the mirror motor extend and/or retract circuit(s). Refer to CIRCUIT TESTING and WIRING REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 9
9	Inspect for poor connections at the outside rearview folding mirror switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 14
10	Inspect for poor connections at the power mirror. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 16	Go to Step 15
11	Repair the open in the mirror switch ground circuit. Refer to WIRING REPAIRS . Did you complete the repair?	Go to Step 16	-
12	Repair the open or short to ground in the battery positive voltage circuit. Refer to WIRING REPAIRS . Did you complete the repair?	Go to Step 16	-
13	Repair the open, short to ground or battery in the mirror motor extend and/or retract circuit(s). Refer to WIRING REPAIRS . Did you find and correct the condition?	Go to Step 16	-
14	Replace the outside rearview folding mirror switch. Refer to Power Folding Outside Mirror Switch Replacement . Did you complete the repair?	Go to Step 16	-
15	Replace the power mirror. Refer to Mirror Replacement (Power Mirror) or Mirror Replacement (Manual) . Did you complete the repair?	Go to Step 16	-
16	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3