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Anonymous Posted on Jun 03, 2010

Memory seat switch does not save seat setting,alhough all motors are working. I am told there is a battery in the circuit which may need replacing, is that correct?

  • Anonymous Jun 03, 2010

    THANK you, but if you had the circuit plan you could tell if it had a battery...I will have to search for the battery not knowing if there is one.

    But thanks anyway.

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1 Answer

ZJ Limited

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  • Jaguar Master 17,989 Answers
  • Posted on Jun 03, 2010
ZJ Limited
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Here's what I have for checking the pots...

Memory Seat checking for bad potentiometers
"You may have a faulty potentiometer for one of the seat movements. The way to check them is to first set all movements to the mid-way position. Then run each one to it's full position and press the memory button. If the led lights up run it fully the other way and press the button. Return it to the mid position and go to the next movement. Check all ranges, front cushion up/down, rear cushion up/down, cushion forward/backward, seat back raise/recline and headrest up/down. Remember to return each one to the mid position before trying the next one. If one fails to light the led you have a bad or out of adjustment potentiometer for that movement function."

I did this and found only the one pot to be off (the one that moves the seat back forward/rear). When I attempt to use my memory seat function the seat back just goes back and back... obviously doesn't 'know' where it is.

Here's what I found on adjusting the pots (contains some testing instructions too)...

Adjusting Potentiometers:
"Remove the seat, tear it apart for access, reinstall it loosely, get out your digital volt meter and get ready.

You have to set each range of motion to the middle position, run it fully one way, press the memory button and hope the LED lights up, run it fully the other way, press the button and hope again and repeat for each of the 8 ways the seat moves. If the LED doesn't light up you have to adjust the potentiometer for that motor. Even the headrest has to be tested. If that one has to be adjusted the rear of the seat has to come apart.

You use a small screwdriver to turn the adjuster screw on each potentiometer while watching the volt meter. Each range of motion should produce a feedback voltage at the limit of its travel. For instance, headrest fully raised--4.36 volts. Fully retracted--0.14 volts. Same for each other range (forward/rearward, seat back recline, etc.)

This is really not something you'd want to get into on your own and I would strongly suggest having a qualified technician do it for you."

Can anyone tell me where the pot is that adjusts the seat back? Seems if I can get access to that pot that I can attempt to adjust it so that the voltages peak as described above... or atleast play with it until I can dial it in.

I apologize for not giving credit where credit is due on these posts... I did not capture the original poster's name. Good luck.

  • 1 more comment 
  • Anonymous Jun 03, 2010

    Thank you for your response..but I was told that there is a button battery in the circuit that may need replacing, is there a battery in the circuit...yes or no....thank you.

  • ZJ Limited
    ZJ Limited Jun 03, 2010

    That may
    well be correct.
    Remember that the information settigns is (and keep) stored by a small battery even when the
    computer is off.
    This systems works same way in your phone even if is turn off or when the computer has been turned off; the dates remain
    intact even with the computer off and unplug from electrical alimentation (or if the battery has been withdrawn,
    in the case of mobile).


    Test it.

  • ZJ Limited
    ZJ Limited Jun 03, 2010

    I'm sure that the dealer is obvious, but you can also check with bentley
    publishers. TY for using Fixya.

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4answers

I have a faulty BCM on my '05 Trailblazer LT, (rear wipers don't function & seat adjustment memory). Can I fit a replacement BCM from a scrapped vehicle without having to 'flash'.

How do you know the BCM is at fault ? Did you hook up a factory or someother type professional scan tool an check for DTC'S - diagnostic trouble codes ? Did you view how these system work in factory sevice repair information ? Did you use a wiring diagram an DVOM - digital volt ohmmeter an test electrical circuits ?

The BCM has nothing to do with the memory seats .
Memory Seat System Components
The memory seat system consists of the following components:
• Power Seat Switch
• Seat Horizontal Motor
• Seat Front Vertical Motor
• Seat Rear Vertical Motor
• Seat Recliner Motor
• Driver Seat Module
• Memory Seat Switch
Memory Seat System Description
Battery voltage is supplied to the driver seat module through the power seat circuit breaker. The driver seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch ground circuit. When a seat adjuster switch is pressed to an active state the switch contact is closed to the reference voltage circuit. Battery voltage on a switch signal circuit indicates to the driver seat module the switch status is active. Each seat adjuster motor is controlled by the driver seat module through 2 motor control circuits. While the seat adjuster motors are in an inactive state the motor control circuits are closed to ground circuit contacts within the driver seat module. The driver seat module operates the seat adjuster motors by switching one of a motor's control circuits to battery voltage. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.


Memory Set/Recall Operation
The driver seat adjuster motors are equipped with potentiometer type position sensors used by the driver seat module to determine the seat position. The position sensors are supplied with 5-volt reference and ground circuits from the driver seat module. The position sensor signal circuits are referenced from ground within the driver seat module. The signal circuit voltage levels monitored by the driver seat module range from 0.39 - 4.58 volts and are determined by the wiper locations on the resistors within the motor position sensors. The position sensor circuit voltage levels are used by the driver seat module to determine the seat position when storing or recalling memory position settings.
The memory recall switch assembly on the driver's door provides inputs to the driver door module. Battery voltage is supplied to the memory recall switch assembly from the driver door module. When a memory recall 1, 2, or EXIT switch is pressed, the switch contacts close the appropriate switch signal circuit to the battery voltage supply circuit within the memory recall switch assembly. When the driver door module receives active switch signals from the memory recall switch assembly, the appropriate commands are sent to the driver seat module using the Class 2 Serial Data circuit.
Memory seat recall operation is allowed only with the transmission selector lever in the PARK position while the ignition is on. The transmission selector lever position data is provided to the driver seat module by a message through the Class 2 Serial Data circuit.
© 2021 General Motors Corporation. All rights reserved


Rear Wiper/Washer System Components
The rear wiper/washer system consists of the following components:
• Rear window wiper motor
• Rear washer pump
• Rear wash relay
• Rear wiper/washer switch
• RR WIPER Circuit Breaker 15A / ENDGLASS REG Circuit Breaker 30A
• WASH 20A fuse
• Body control module (BCM)
• Liftgate control module (LGM) / End gate module (EGM)


Rear Wiper Operation (with LGM)
The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the LGM by the BCM, as a message on the serial data circuit. The rear window wiper motor is controlled by the LGM. The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the BCM during ignition on, accessory or RAP power modes. The rear wiper/washer switch is composed from a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the BCM. The rear wiper/washer switch has continuity at all times and the BCM expects a rear wiper/washer switch signal voltage in all switch positions including OFF. The rear wiper motor is supplied battery positive voltage and ground. The LGM controls rear wiper motor operation through the rear window motor speed signal circuit. The rear window motor speed signal circuit is supplied a battery positive reference voltage by the rear window wiper motor module and is pulse width modulated to ground by the LGM. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. The liftglass and liftgate ajar switches are inputs to the LGM and must be in an inactive state in order for rear wiper washer system operation to be enabled. When an ajar switch is active the LGM suspends wiper motor operation directly and sends the ajar switch status messages over the serial data circuit enabling the BCM to suspend washer pump operation.


Rear Wiper Operation (with EGM)
The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the EGM by the BCM, as a message on the serial data circuit. The rear window wiper motor is controlled by the EGM. The switch power circuit to the rear wiper/washer switch is a 12-volt reference supplied by the BCM. The rear wiper/washer switch is composed from a series of resistors and the switch position is determined by the voltage of the rear wiper/washer switch signal circuit to the BCM. The rear wiper/washer switch has continuity at all times and the BCM expects a rear wiper/washer switch signal voltage in all switch positions including OFF. The rear wiper motor is supplied battery positive voltage and ground. The EGM controls rear wiper motor operation through the rear window motor speed signal circuit. The rear window motor speed signal circuit is supplied a battery positive reference voltage by the rear window wiper motor module and is pulse width modulated to ground by the EGM. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode. The rear window motor park signal circuit provides position status of the rear wiper to the EGM.
The rear wiper and washer operation is allowed if the following conditions are true:
• Power mode is run or accessory.
• Lower left ajar switch is closed.
• Upper left ajar switch is closed.
• Upper right ajar switch is closed.
• Upper left dome switch is closed.
• The end gate window is fully closed.
• No end gate window express down, up, or down is requested.
• No gate swing open or drop open is requested.
If rear wiper/washer operation is attempted and the end gate window is open the driver information center (DIC) displays "Tailgate Glass Down". If the rear wiper is not in the park position and an attempt to open end gate window is done, the DIC displays "Rear Wiper Obstruction".


Your best bet , take it to a qualified repair shop because you have no idea how these systems work .
0helpful
1answer

I have a 2004 GMC envoy. I cannot control seat control number two. I can only control driver seat number one. Did I blew a fuse? Or does it has a fuse?

You mean memory seat position 1 & 2 ?

Memory Seat System Components
The memory seat system consists of the following components:
• Power Seat Switch
• Seat Horizontal Motor
• Seat Front Vertical Motor
• Seat Rear Vertical Motor
• Seat Recliner Motor
• Driver Seat Module
• Memory Seat Switch

Memory Seat System Description
Battery voltage is supplied to the driver seat module through the power seat circuit breaker. The driver seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch ground circuit. When a seat adjuster switch is pressed to an active state the switch contact is closed to the reference voltage circuit. Battery voltage on a switch signal circuit indicates to the driver seat module the switch status is active. Each seat adjuster motor is controlled by the driver seat module through 2 motor control circuits. While the seat adjuster motors are in an inactive state the motor control circuits are closed to ground circuit contacts within the driver seat module. The driver seat module operates the seat adjuster motors by switching one of a motor's control circuits to battery voltage. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.

Memory Set/Recall Operation
The driver seat adjuster motors are equipped with potentiometer type position sensors used by the driver seat module to determine the seat position. The position sensors are supplied with 5-volt reference and ground circuits from the driver seat module. The position sensor signal circuits are referenced from ground within the driver seat module. The signal circuit voltage levels monitored by the driver seat module range from 0.39 - 4.58 volts and are determined by the wiper locations on the resistors within the motor position sensors. The position sensor circuit voltage levels are used by the driver seat module to determine the seat position when storing or recalling memory position settings.
The memory recall switch assembly on the driver's door provides inputs to the driver door module. Battery voltage is supplied to the memory recall switch assembly from the driver door module. When a memory recall 1, 2, or EXIT switch is pressed, the switch contacts close the appropriate switch signal circuit to the battery voltage supply circuit within the memory recall switch assembly. When the driver door module receives active switch signals from the memory recall switch assembly, the appropriate commands are sent to the driver seat module using the Class 2 Serial Data circuit.
Memory seat recall operation is allowed only with the transmission selector lever in the PARK position while the ignition is on. The transmission selector lever position data is provided to the driver seat module by a message through the Class 2 Serial Data circuit.

--------------------------------------------------------------------------------
Memory Seat Feature Inoperative
Step
Action
Values
Yes
No
Schematic Reference: Driver Seat Schematics
Connector End View Reference: Power Seat Connector End Views
DEFINITION: One or more of the memory recall functions are inoperative.
1
Did you perform the Power Seat Diagnostic System Check?
--
YES - Go to Step 2
NO - Go to Diagnostic System Check - Power Seat Systems
2
Attempt to set and recall memory 1, memory 2, and exit seat position settings.
Does the system operate normally?
--
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO - Go to Step 3
3
Install a scan tool.
Observe the Memory Switch parameter in the driver door module Inputs data list.
Press the memory 1 switch.
Does the scan tool indicate the memory 1 switch is active only while the switch is pressed?
--
YES - Go to Step 4
NO - Go to Step 6
4
Observe the Memory Switch parameter in the driver door module Inputs data list.
Press the memory 2 switch.
Does the scan tool indicate the memory 2 switch is active only while the switch is pressed?
--
YES - Go to Step 5
No - Go to Step 7
5
Observe the Memory Switch parameter in the driver door module Inputs data list.
Press the exit switch.
Does the scan tool indicate the exit switch is active only while the switch is pressed?
--
YES - Go to Step 12
NO - Go to Step 8
6
Disconnect the memory seat switch connector from the driver door module.
Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 1 switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing in Wiring Systems.
Press the memory 1 switch.
Is the resistance less than the specified value only while the switch is pressed?
0.5 ohms
Go to Step 13
Go to Step 11
7
Disconnect the memory seat switch connector from the driver door module.
Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 2 switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing in Wiring Systems.
Press the memory 2 switch.
Is the resistance less than the specified value only while the switch is pressed?
0.5 ohms
Go to Step 13
Go to Step 11
8
Disconnect the memory seat switch connector from the driver door module.
Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 1 switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing in Wiring Systems.
Press the exit switch.
Is the resistance less than the specified value only while the switch is pressed?
0.5 ohms
Go to Step 9
Go to Step 11
9
Using a DMM, test the resistance through the memory switch from the voltage supply circuit terminal to the memory 2 switch signal circuit terminal in the pigtail connector. Refer to Circuit Testing in Wiring Systems.
Press the exit switch.
Is the resistance less than the specified value only while the switch is pressed?
0.5 ohms
Go to Step 10
Go to Step 11
10
Test the memory switch signal circuits in the switch harness for a short to ground or voltage. Refer to Circuit Testing in Wiring Systems.
Are either of the switch signal circuits shorted to ground or voltage?
--
Go to Step 14
Go to Step 13
11
Inspect for poor connections at the memory switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 17
Go to Step 14
12
Inspect for poor connections at the driver seat module. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 17
Go to Step 15
13
Inspect for poor connections at the driver door module. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
--
Go to Step 17
Go to Step 16
14
Replace the memory switch. Refer to Driver Seat Adjuster Memory Switch Replacement .
Did you complete the replacement?
--
Go to Step 17
--
15
Replace the driver seat module. Refer to Memory Seat Control Module Replacement .
Did you complete the replacement?
--
Go to Step 17
--
16
Replace the driver door module. Refer to Door Lock and Side Window Switch Replacement - Driver Side in Doors.
Did you complete the replacement?
--
Go to Step 17
--
17
Operate the memory seat system to verify the repair.
Did you correct the condition?
--
System OK
Go to Step 2
0helpful
1answer

2009 Buick Lucerne, power driver seat won't adjust on seat or through memory button. Passenger seat works fine. Heater for both seats won't turn on. Checked fuses and relays, all ok

Your best bet , have it checked for DTC'S - diagnostic trouble codes first ! Electronic control modules involved ! Can't check with a OBD 2 code reader , need advanced scan tool . No codes , check B+ voltage and ground to the module .
Power Seat Inoperative (With Memory A45)
Memory Seat Feature Inoperative
Circuit/System Description
Battery voltage is supplied at all times to the memory seat module (MSM) from the MDL-MEM 10A fuse located in the rear fuse block. This voltage is used by the MSM for logic power and to supply battery reference voltage to the seat and lumbar adjuster switches. Battery positive voltage is also supplied at all times to the MSM from the PWR SEAT 25A circuit breaker. This voltage is connected to a power rail internal to the MSM and is used to drive the power seat motors, lumbar motors, and seat heater elements on vehicles equipped with heated seats. Each seat and lumbar adjuster motor is controlled by the MSM through 2 motor control circuits. The MSM connects all motor control circuits on the power rail to a common reference point whenever they are not in operation. This reference point is biased to approximately 2.5 volts. The MSM checks to see if the reference voltage is shorted to ground or battery before enabling any of the seat or lumbar motors.

Circuit/System Description
Reference voltage is supplied to the memory switch from the driver door module (DDM). When a memory switch is pressed, reference voltage is applied through the switch contacts, a series of resistors and thorough the memory switch signal circuit to the DDM. The door module then sends a serial data message to the memory seat module (MSM) indicating the memory recall request. The MSM then commands the appropriate seat motors to move to the pre-recorded seat positions stored in memory in response to the switch input.
0helpful
1answer

The front seats for our 2003 Escalade will not move forward or backward and the heat control for the front seats will not work.

Does your Escalade have memory seats ?
There are 2 options of power seat systems available in full size trucks. The 6 way driver and passenger power seats, and 8 way driver and passenger power seats with driver memory. For the driver memory seat operation refer to Memory Seats Description and Operation . Power seats without memory are completely controlled through the power seat switch. Battery voltage is supplied to the power seat switch through the power seat circuit breaker. While the seat adjuster switches are in an inactive state the switch contacts are closed to the power seat switch ground circuit. When a power seat switch is pressed to an active state the switch contact is closed to the battery voltage supply circuit. Each seat adjuster motor is controlled by the power seat switch through 2 motor control circuits. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.
0helpful
3answers

Driver side electric seat is stuck in the far forward position and won't move. How do I move it manually or fix the motor.

Auto Repair: How to Replace a Power Seat Motor - YouTube

? 1:44
https://www.youtube.com/watch?v=EDh-0rs5Fjo
Oct 26, 2010 - Uploaded by automdvideos
Auto Repair: How to Replace a Power Seat Motor ... 2007 - 2008 Ford Expedition/Lincoln Navigator Driver Bottom Install Video ...2003-2006 Chevy/GMC Seat Cover Install 1 of 3 - eBay Ready ...2000 Ford Explorer Front Seat Track Stuck Motor Repair - Duration: 4:39. by cubmancan 4,959 views. 4:39.
Drivers seat is dead! No power seat or heat. - TheDieselGarage.comwww.thedieselgarage.com/.../96465-drivers-seat-dead-no-power-seat-hea...Mar 22, 2010 - 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005.... Power seat on driver side didn't work.....passenger did! Neither ...DANG electric seat ' Chevy Truck Forum ' GM Truck Clubwww.gmtruckclub.com/forum/threads/dang-electric-seat.2990/Apr 27, 2006 - 10 posts - ‎7 authors'03 Tahoe My driver seat just stopped, of corse not where I need it, the ... I have a 2003Tahoe and both heated seats are not working. ... with my seat heater on the drivers seat in my 03 Avalanche, it turns ... The driver's side on my Silverado gets way warmer than the passenger side. ... Frozen New Member.Power Seat Problems?? - Tahoe Forum - Che
0helpful
1answer

I have a 2002 gmc envoy xl. the heat and seat and mirrors work fine, however every time i turn the car on or off the seat shifts all the way forward and the mirrors tilt in. to solve some of the...

Memory Seat System Components
The memory seat system consists of the following components:
• Power Seat Switch
• Seat Horizontal Motor
• Seat Front Vertical Motor
• Seat Rear Vertical Motor
• Seat Recliner Motor
• Driver Seat Module
• Memory Seat Switch

It's not the module , probably sensor supplying bad info to the module.

Memory Set/Recall Operation
The driver seat adjuster motors are equipped with potentiometer type position sensors used by the driver seat module to determine the seat position. The position sensors are supplied with 5-volt reference and ground circuits from the driver seat module. The position sensor signal circuits are referenced from ground within the driver seat module. The signal circuit voltage levels monitored by the driver seat module range from 0.39 - 4.58 volts and are determined by the wiper locations on the resistors within the motor position sensors. The position sensor circuit voltage levels are used by the driver seat module to determine the seat position when storing or recalling memory position settings.
The memory recall switch assembly on the driver's door provides inputs to the driver door module. Battery voltage is supplied to the memory recall switch assembly from the driver door module. When a memory recall 1, 2, or EXIT switch is pressed, the switch contacts close the appropriate switch signal circuit to the battery voltage supply circuit within the memory recall switch assembly. When the driver door module receives active switch signals from the memory recall switch assembly, the appropriate commands are sent to the driver seat module using the Class 2 Serial Data circuit.
Memory seat recall operation is allowed only with the transmission selector lever in the PARK position while the ignition is on. The transmission selector lever position data is provided to the driver seat module by a message through the Class 2 Serial Data circuit.

Your best bet , take it to a qualified repair shop and have it checked for DTC'S - diagnostic trouble codes .
Install a scan tool.
Observe the switch parameter for which the DTC has set in the seat module Inputs/Outputs data list.
Does the scan tool display Inactive?
DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820
DTC B1825, B1850, B1860, B2355, B2365, or B2375
The driver seat adjuster motors are equipped with potentiometer type position sensors used by the driver seat module to determine the seat position. The position sensors are supplied with 5-volt reference and ground circuits from the driver seat module. The position sensor signal circuits are referenced from ground within the driver seat module. The signal circuit voltage levels monitored by the driver seat module range from 0.39-4.58 volts and are determined by the wiper locations on the resistors within the motor position sensors. The position sensor circuit voltage levels are used by the driver seat module to determine the seat position when storing or recalling memory position settings.

$316.00 from doorman
0helpful
1answer

GMC Yukon Seat Switch

You don't mention what year your Yukon is ? This could very well be a control Module problem .
I'll post how the power memory seat's work or are suppose to work !

Memory Seats Description and Operation

Battery voltage is supplied to the memory seat module through a 25 A circuit breaker. The memory seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch common circuit. When a seat adjuster switch is pressed to an active state the switch contact is closed to the reference voltage circuit. Battery voltage on a switch signal circuit indicates to the memory seat module the switch status is active. Each seat adjuster motor is controlled by the memory seat module through 2 motor control circuits. While the seat adjuster motors are in an inactive state the motor control circuits are closed to ground circuit contacts within the memory seat module. The memory seat module operates the seat adjuster motors by switching one of a motors control circuits to battery voltage. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.


Memory Set/Recall Operation
The seat adjuster motors are equipped with internal position sensors. The adjuster motor position sensors are monitored by the memory seat module and are used to determine the seat position when storing or recalling memory settings. The driver seat adjuster motors use potentiometer type position sensors. The position sensors are supplied with a 5 V reference and ground circuits from the memory seat module. The position sensor signal circuits return to an analog input within the memory seat module. During adjuster motor operation the position sensor provides a voltage change proportional to the change in revolution of the adjuster motor shaft. The memory seat module monitors the voltage from the position sensor signal circuits to determine the adjuster motor positions when storing or recalling memory seat position settings.
The memory recall switch assembly on the driver door provides inputs to the driver door lock/window switch. Battery voltage is supplied to the memory recall switch assembly from the driver door lock/window switch. When a RCL 1, RCL 2, or EXIT switch is pressed, the switch contacts close the appropriate switch signal circuit to the battery voltage supply circuit within the memory recall switch assembly. When the driver door lock/window switch receives active switch signals from the memory recall switch assembly, the appropriate commands are sent to the memory seat module using the GMLAN Serial Data circuit. The Body Control Module software version determines the personalization features available.
Memory seat recall operation is allowed only with the transmission selector lever in the PARK position while the ignition is on. The transmission selector lever position data is provided to the memory seat module by a message through the GMLAN Serial Data circuit.

There are somethings listed you are not familiar with , like GMLAN Serial Data circuit ,maybe Body Control Module software etc... GMLAN is a communincation network that the computers on the vehicle uses to share information , transmit commons etc... you can google it to read about it .

There are DTC'S - diagnostic trouble codes that can set in the module in control . Do you know what DTC'S are .

DTC Descriptors
DTC B1825 01: Driver Seat Recline Position Sensor Circuit Short to Battery
DTC B1825 06: Driver Seat Recline Position Sensor Circuit Short to Ground or Open
DTC B1825 5A: Driver Seat Recline Position Sensor Circuit Plausibility Failure
DTC B1850 01: Driver Seat Lumbar Horizontal Position Sensor Circuit Short to Battery
DTC B1850 06: Driver Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open
DTC B1850 5A: Driver Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure
DTC B1860 01: Driver Seat Lumbar Vertical Position Sensor Circuit Short to Battery
DTC B1860 06: Driver Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open
DTC B1860 5A: Driver Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure
DTC B2355 01: Driver Seat Front Vertical Position Sensor Circuit Short to Battery
DTC B2355 06: Driver Seat Front Vertical Position Sensor Circuit Short to Ground or Open
DTC B2355 5A: Driver Seat Front Vertical Position Sensor Circuit Plausibility Failure
DTC B2365 01: Driver Seat Rear Vertical Position Sensor Circuit Short to Battery
DTC B2365 06: Driver Seat Rear Vertical Position Sensor Circuit Short to Ground or Open
DTC B2365 5A: Driver Seat Rear Vertical Position Sensor Circuit Plausibility Failure
DTC B2375 01: Driver Seat Assembly Horizontal Position Sensor Circuit Short to Battery
DTC B2375 06: Driver Seat Assembly Horizontal Position Sensor Circuit Short to Ground or Open
DTC B2375 5A: Driver Seat Assembly Horizontal Position Sensor Circuit Plausibility Failure

5) Memory Seat Module is under the front of the driver seat , you could look under an see if all the connectors are fully seated.

The best diagnostic step would be to hook up the factory scan tool an see what the computer is seeing as far as inputs from the switch an outputs it's sending . I wouldn't suggest you take the seat apart an try testing electrical inputs etc.... unless you very familiar with automotive electrical systems an circuits .
0helpful
1answer

I have a 2008 Chevrolet Silverado 1500, extended cab, automatic truck.......PROBLEM, the drivers side has a power seat, it will not move in any direction and the passenger side front and rear power windows...

How to diagnose this problem ? Viewing wiring diagrams to see what all is invovled in these electrical circuit's , check power supply's an ground connection's using a DMM - digital multimeter !
What type power seat's ? does it have memory ,heated an cooled etc ?
Power Seats System Description and Operation
There are 2 options of power seat systems available in full size trucks. The first is 6 way driver and passenger power seats without memory. The second is an 8-way driver seat plus 4-way lumbar with memory, heat and optional cool function. While the passenger has 8-way power seats with heat and optional cool function. For the driver memory seat operation, refer to Memory Seats Description and Operation. Power seats without memory are completely controlled through the power seat switch. Battery voltage is supplied to the power seat switch through the power seat circuit breaker. While the seat adjuster switches are in an inactive state the switch contacts are closed to the power seat switch ground circuit. When a power seat switch is pressed to an active state the switch contact is closed to the battery voltage supply circuit. Each seat adjuster motor is controlled by the power seat switch through 2 motor control circuits. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.

If it has memory seat's there is a control module !
Battery voltage is supplied to the driver seat module through a 25 A circuit breaker. The driver seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch common circuit.
Both right side windows have a seperate power supply from the left side window's ,has RT DOORS circuit breaker CB1 - 25amp. location left instrument panel fuse block . Circuit breaker's very rarely fail .Do the door lock's work on that side of the vehicle ? The windows won't work with their own switche's ?
The DDS controls the passenger window through a GMLAN message to the PDS. When a power window switch is activated in the up or down positions the PDS supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the PDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist, and during window motor operation the PDS continues to monitor the motor current to verify proper window motor operation. (Scan tool support is available for this system)
Check PDM fuse 4 15 amp ,this supply's B+ voltage to the DOORLOCK/WINDOW switch passenger side . Check for broken wires inside the flex boot from the body to the passenger door .
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The six way power seat on my 2005 suburban has an issue. When I turn the motor off and remove the key the motor goes to it's down and back position but continues to run. And it doesn't respond to the...

The first place to start would be to have the dealer or someother qualified repair shop , that has a professional scan tool read DTC'S - diagnostic trouble codes in the driver seat module ! The seat adjuster motors are controlled by the driver seat module through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the driver seat module. In an active state the driver seat module switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the driver seat module also monitors the current flow through the motor control circuits.
DTC B1770, B1775, B1780, B1785, B1790, B1805, or B2415
B1825 , B1850, B1860, B1960, B2355, B2365, or B2375
B3962
Memory Seat System Components
The memory seat system consists of the following components:
• Power seat switch assembly
• Memory recall switch assembly
• Horizontal adjuster motor
• Front vertical adjuster motor
• Rear vertical adjuster motor
• Recline adjuster motor
• Driver seat module
• Driver door module
• SEAT 30A circuit breaker
Memory Seat System Description
Battery voltage is supplied to the driver seat module through the power seat circuit breaker. The driver seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch ground circuit. When a seat adjuster switch is pressed to an active state the switch contact is closed to the reference voltage circuit. Battery voltage on a switch signal circuit indicates to the driver seat module the switch status is active. Each seat adjuster motor is controlled by the driver seat module through 2 motor control circuits. While the seat adjuster motors are in an inactive state the motor control circuits are closed to ground circuit contacts within the driver seat module. The driver seat module operates the seat adjuster motors by switching one of a motor's control circuits to battery voltage. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.

Memory Set/Recall Operation
The seat adjuster motors are equipped with internal position sensors. The adjuster motor position sensors are monitored by the driver seat module and are used to determine the seat position when storing or recalling memory settings. The horizontal, front vertical, and rear vertical adjuster motors use hall effect type position sensors. The hall effect position sensors are supplied with battery positive reference and ground circuits from the driver seat module. The position sensor signal circuits are supplied battery positive voltage through a resistor them monitored within the driver seat module. During adjuster motor operation the hall effect position sensor provides a single pulse for every revolution of the adjuster motor shaft. The driver seat module counts the pulses from the position sensor signal circuits to determine the adjuster motor positions when storing or recalling memory seat position settings. The recline adjuster motor is equipped with a potentiometer type position sensor. The recline motor position sensor is supplied with it's own 5-volt reference ground circuits from the driver seat module. The recline position sensor signal circuit is referenced from ground within the driver seat module. The signal voltage monitored by the driver seat module ranges from 0.39 - 4.58 volts and is determined by the wiper location on the resistor within the recline motor position sensor. The recline motor position sensor signal circuit voltage level is used by the driver seat module to determine the seat recline position when storing or recalling memory seat position settings.
The memory recall switch assembly on the driver's door provides inputs to the driver door module. Battery voltage is supplied to the memory
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2002 Ford Excursion drivers control module

It could be , but to replace it without testing would not be a wise idea . These modules can set DTC'S - diagnostic trouble code's .Having a qualified repair shop check it would be your best bet .
It's called driver seat module .
DSM Diagnostic Trouble Code (DTC) Index
DSM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU Is Faulted DSM INSTALL a new DSM. REFER to Section 419-10 . B1530 Memory Set Switch Circuit Short to Ground DSM Go To Pinpoint Test J . B1534 Memory 1 Switch Circuit Short to Ground DSM Go To Pinpoint Test J . B1538 Memory 2 Switch Circuit Short to Ground DSM Go To Pinpoint Test J . B1663 Seat Driver Front Up/Down Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). If motor operates, Go To Pinpoint Test J . B1664 Seat Driver Rear Up/Down Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). If motor operates, Go To Pinpoint Test J . B1665 Seat Driver Forward/Backward Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). If motor operates, Go To Pinpoint Test J . B1666 Seat Recline Forward/Rearward Motor Stalled DSM If the motor does not operate, Go To Pinpoint Test H (Navigator). If motor operates, Go To Pinpoint Test J . B1667 Mirror Driver Up/Down Motor Stalled DSM REFER to Section 501-09 . B1668 Mirror Driver Right/Left Motor Stalled DSM REFER to Section 501-09 . B1669 Mirror Passenger Up/Down Motor Stalled DSM REFER to Section 501-09 . B1670 Mirror Passenger Right/Left Motor Stalled DSM REFER to Section 501-09 . B1676 Battery Voltage Out of Range DSM REFER to Section 414-00 . B1703 Seat Driver Recline Forward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator). B1707 Seat Driver Recline Rearward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator). B1711 Seat Driver Front Up Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1715 Seat Driver Front Down Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1719 Seat Driver Forward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1723 Seat Driver Rearward Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1727 Seat Driver Rear Up Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1731 Seat Driver Rear Down Switch Circuit Short to Battery DSM Go To Pinpoint Test H (Navigator) or Go To Pinpoint Test I (Expedition). B1735 Mirror Driver Vertical Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1739 Mirror Driver Horizontal Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1743 Mirror Passenger Vertical Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1747 Mirror Passenger Horizontal Switch Circuit Short to Battery DSM REFER to Section 501-09 . B1950 Seat Rear Up/Down Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1952 Seat Rear Up/Down Feedback Potentiometer Circuit Short to Battery DSM Go To Pinpoint Test J . B1954 Seat Front Up/Down Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1956 Seat Front Up/Down Feedback Potentiometer Circuit Short to Battery DSM Go To Pinpoint Test J . B1958 Seat Recline Fwd/Backward Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1961 Seat Recline Fwd/Backward Feedback Potentiometer Circuit Short to Ground DSM Go To Pinpoint Test J . B1962 Seat Horizontal Forward/Rearward Feedback Potentiometer Circuit Failure DSM Go To Pinpoint Test J . B1964 Seat Horizontal Forward/Rearward Feedback Potentiometer Circuit Short to Battery DSM Go To Pinpoint Test J . B1987 Pedal Forward / Rearward Motor Stalled DSM REFER to Section 206-00 . B1988 Pedal Position Forward Switch Circuit Short to Battery DSM REFER to Section 206-00 . B1989 Pedal Position Rearward Switch Circuit Short to Battery DSM REFER to Section 206-00 . B1990 Pedal Forward/Rearward Feedback Potentiometer Circuit Failure DSM REFER to Section 206-00 . B1991 Pedal Forward/Rearward Feedback Potentiometer Circuit Short to Battery DSM REFER to Section 206-00 . B2312 Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2314 Mirror Passenger Horizontal Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2316 Mirror Passenger Vertical Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2318 Mirror Passenger Vertical Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2320 Mirror Driver Horizontal Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2322 Mirror Driver Horizontal Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2324 Mirror Driver Vertical Feedback Potentiometer Circuit Failure DSM REFER to Section 501-09 . B2326 Mirror Driver Vertical Feedback Potentiometer Short to Battery DSM REFER to Section 501-09 . B2477 Module Configuration Failure DSM INSTALL a new DSM.
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