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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 955 (Door System, Mirror System & Window System) >> Diagnostic Information and Procedures >> Power Mirrors Inoperative

Power Mirrors Inoperative

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Power Mirrors Inoperative

Step Action Yes No
Schematic Reference:  Outside Mirror Schematics  
Connector End View Reference: Power Door Systems Connector End Views  
1 Did you perform the Door Systems Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Door Systems 
2
  1. Place the mirror select switch in the left mirror position.
  2. Activate the mirror position switch in the UP, DOWN, LEFT and RIGHT directions and note the operation.
  3. Place the mirror select switch in the right mirror position.
  4. Activate the mirror position switch in the UP, DOWN, LEFT and RIGHT directions and note the operation.
Do both power mirrors operate properly?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
  1. Install a scan tool.
  2. Monitor the mirror select switch and the mirror switch data parameters.
  3. Activate the mirror select switch to the left and right mirror positions.
  4. Activate the mirror direction switch to the UP, DOWN, LEFT and RIGHT positions.
Do all of the mirror data parameters change properly with the corresponding switch activations?		 Go to Step 4  Go to Step 6 
4 With the scan tool command the inoperative mirror UP, DOWN, LEFT and RIGHT.
Does the mirror move with the corresponding scan tool command?		 Go to Step 6  Go to Step 5 
5
  1. Disconnect the inoperative mirror.
  2. Connect a test lamp between the appropriate mirror motor control circuits for the inoperative direction(s).
  3. With a scan tool, command the mirror in the inoperative direction(s).
Does the test lamp illuminate with the corresponding scan tool command?		 Go to Step 7  Go to Step 8 
6 Inspect for poor connections at the driver door module. 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 12  Go to Step 9 
7 Inspect for poor connections at the power mirror. 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 12  Go to Step 10 
8 Inspect for poor connections at the appropriate door module. 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 12  Go to Step 11 
9
IMPORTANT: Perform the set up procedure for the driver door module. Refer to Service Programming System (SPS) in Programming.
Replace the driver door module. Refer to Switch Replacement - Door Lock and Side Window - Driver .Did you complete the repair?		 Go to Step 12  -
10 Replace the power mirror. Refer to Mirror Replacement (Manual) Mirror Replacement (Power Mirror) .
Did you complete the repair?		 Go to Step 12  -
11
IMPORTANT: Perform the set up procedure for the appropriate door module. Refer to Service Programming System (SPS) in Programming.
Replace the appropriate door module. Refer to Switch Replacement - Door Lock and Side Window - Driver  or Switch Replacement - Door Lock and Side Window - Passenger .Did you complete the repair?		 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 
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