Power Seat Does Not Recline. Chevrolet Tahoe

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 Tahoe - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Power Seat Does Not Recline

Power Seat Does Not Recline w/o Memory Seats

Step	Action	Yes	No
Schematic Reference: Power Seats Schematics Important: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. This also assumes that all other directions are operational.
1	Did you review the Power Seats System Description and Operation and perform the necessary inspections?	Go to Step 2	Go to Power Seats System Description and Operation
2	Operate the system. Does the system operate normally?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Disconnect the inoperative recline motor. Connect a test lamp between the recline motor control circuits. Operate the power seat switch to the recline UP and DOWN positions. Did the test lamp illuminate for each switch position?	Go to Step 6	Go to Step 4
4	Test the control circuits of the inoperative recline motor for a open or short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition?	Go to Step 9	Go to Step 5
5	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 9	Go to Step 8
6	Inspect for poor connections at the harness connector of the recline motor. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?	Go to Step 9	Go to Step 7
7	Replace the recline motor. Refer to Front Seat Adjuster Motor Replacement . Did you complete the replacement?	Go to Step 9	--
8	Replace the power seat switch. Refer to Power Seat Switch Replacement . Did you complete the replacement?	Go to Step 9	--
9	Operate the system to verify the repair. Did you correct the condition?	System OK	Go to Step 3

Power Seat Does Not Recline W Memory Seats

Test Descriptions

The numbers below refer to the step numbers on the diagnostic table.

In order to conserve battery power, the memory Seat Module enters a sleep mode when ever the unit has not been active for 16 seconds. To wake the memory seat module again from a sleep mode, the switch must be activated .

Step

Action

Value(s)

Yes

Schematic Reference: Memory Seats Schematics Power Seats Schematics

Important: This table assumes that all mechanical linkage and drivers are free from obstruction and not binding. This table also assumes that all other directions are operational.

Did you review the power seats system Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Power Seats System Description and Operation

Operate the power seat in all direction.

Does the system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Does the seat recline for approximately two seconds and stop in both forward and rearward directions?

Go to Step 4

Go to Step 7

•	Disconnect the recline motor position sensor harness at the motor.

•	Activate the seat in any direction.

•	Measure the voltage from recline motor position sensor voltage reference circuit to a good ground.

Does the voltage measured near the specified value?

5 V

Go to Step 5

Go to Step 13

•	Activate the recline power seat switch in both forward and rearward directions.

•	Measure the voltage from the recline seat motor position sensor signal circuit, at the memory seat module, to a good ground.

Does the voltage measured near the specified value?

5 V

Go to Step 6

Go to Step 14

•	Activate the recline power seat switch in both forward and rearward directions.

•	Measure the voltage between the recline motor position sensor voltage reference and the recline motor position sensor low reference.

Does the voltage measured near the specified value?

5 V

Go to Step 18

Go to Step 15

•	Back probe the power seat recline forward switch signal at the memory seat module, with a test lamp connected to a good ground.

•	Operate the power seat switch to move the seat in recline forward direction while observing the test lamp.

Did the test lamp illuminate?

Go to Step 8

Go to Step 10

•	Back probe the power seat recline rearward switch signal at the memory seat module, with a test lamp connected to a good ground.

•	Operate the power seat switch to move the seat in recline rearward direction while observing the test lamp.

Did the test lamp illuminate?

Go to Step 9

Go to Step 11

•	Disconnect the recline motor harness connector at the recline motor.

•	Connect a test lamp between the recline motor control circuits.

•	Operate the power seat switch to the forward and rearward direction.

Did the test lamp illuminate for both switch positions?

Go to Step 17

Go to Step 12

Test the power seat recline forward switch signal circuit to the memory seat module for open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.