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Home >> GMC >> 2002 >> Yukon Denali >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Power Seat System >> Diagnostic Information and Procedures >> Power Seat Inoperative (w/o Memory)

Power Seat Inoperative (w/o Memory)

Power Seat Inoperative (w/o Memory)

Step Action Yes No
Schematic Reference: Power Seats Schematics 
DEFINITION: The driver or passenger power seat is inoperative in all modes.
1 Did you review the Power Seats System Description and Operation? Go to Step 2  Go to Symptoms - Seats 
2 Attempt to operate all of the power seat functions.
Are all of the power seat functions inoperative?
Go to Step 3  Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
3
  1. Disconnect the seat adjuster switch.
  2. Connect a test lamp from the battery voltage supply circuit terminal in the harness connector to a good ground.
Does the test lamp illuminate?
Go to Step 4  Go to Step 5 
4 Connect a test lamp from the battery voltage supply circuit terminal to the ground circuit terminal in the seat adjuster switch harness connector.
Does the test lamp illuminate?
Go to Step 7  Go to Step 6 
5 Repair the battery voltage supply circuit to the seat adjuster switch for an open or short to ground. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Is the repair complete?
Go to Step 9  -
6 Repair the seat adjuster switch ground circuit for an open or high resistance. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Is the repair complete?
Go to Step 9  -
7 Inspect for poor connections at the harness connector of the power seat switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS .
Did you find and correct the condition?
Go to Step 9  Go to Step 8 
8 Replace the power seat switch. Refer to Seat Switch Replacement - Power .
Is the repair complete?
Go to Step 9  -
9 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3