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Power Seat Inoperative (with Memory)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Power Seat Inoperative (with Memory) Diagnostic Test

Step
 		 Action Yes No
Schematic Reference:  Driver Seat Schematics  
Connector End View Reference:  Power Seat Systems Connector End Views  
1 Did you perform the Power Seat Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Power Seat Systems 
2 Attempt to operate all of the seat adjuster motors through their full range of adjustment.
Do all of the seat adjuster motors operate normally?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3
  1. Install a scan tool.
  2. Observe the seat adjuster switch parameters in the seat module Inputs/Outputs data list.
  3. Operate the seat adjuster switches in both directions.
Does the scan tool display the correct switch status parameters in relation to the actual switch positions?		 Go to Step 5  Go to Step 4 
4
  1. Disconnect the seat adjuster switch connector.
  2. Using a DMM test for battery voltage at the switch supply voltage circuit terminal in the harness connector.
Is battery voltage present on the switch supply voltage circuit?		 Go to Step 8  Go to Step 6 
5
  1. Disconnect the seat module connector C1.
  2. Connect a test lamp from the high current battery voltage supply circuit terminal in the harness connector to ground.
Does the test lamp illuminate?		 Go to Step 9  Go to Step 7 
6 Test the battery voltage supply circuit to the power seat switch for open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 12  Go to Step 9 
7 Repair the high current battery voltage supply circuit to the seat module for open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Is the repair complete?		 Go to Step 12  -
8 Inspect for poor connections at the harness connector of the power seat switch. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Did you find and correct the condition?		 Go to Step 12  Go to Step 10 
9 Inspect for poor connections at the harness connectors of the memory seat module. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Did you find and correct the condition?		 Go to Step 12  Go to Step 11 
10 Replace the power seat switch. Refer to Seat Switch Replacement - Power .
Is the repair complete?		 Go to Step 12  -
11 Replace the memory seat module. Refer to Memory Seat Control Module Replacement .
Is the repair complete?		 Go to Step 12  -
12 Operate the system to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
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