Power seat ground

Check for battery power on the orange wire pin D and ground (black wire) pin C- Brown wire pin B should be ignition hot on connector C1 on the Driver Climate Control Seat Module located under the driver seat. If you have power and ground, you may need to use a scan tool to see if there are any codes stored in the module. If the scan tool is unable to communicate with this module, it could either be a bad module or a network problem. If you are missing either battery, ignition hot, or ground- then repair as needed

Heated Seats
This system allows independent seat electrical heating of each front seat on demand.
The components of the system are:

• the seat heater mats located on the seat cushion and backrest.
• the heated seat module located on the passenger power seat track and cushion frame on manual seat track.
• the heated seat switches, located on the electronic automatic temperature control (EATC) module.
• temperature sensors, located in the seat cushion heater mats.

A new heater mat will come assembled on a new foam pad.
Climate Controlled Seats
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the electronic automatic temperature control (EATC) module located on the instrument panel. Each front seat temperature is then monitored and controlled by the climate control seat module (CCSM) located on the front passenger seat track.
The climate controlled seat system contains the following components:

• EATC module
• CCSM
• Thermo-electric device (TED) and blower assembly within each front seat cushion and backrest
• Air filter (attached to each TED and blower assembly)
• Cushion TED adapter attached to the cushion frame
• Cushion and backrest manifolds
• Cushion and backrest foam pads
• Cushion and backrest trim covers
• Seats
  Front Seats
  NOTE: The high speed controller area network (HS-CAN) circuits that pass through the passenger seat harness are part of the main HS-CAN LOOP. If the front passenger seat-to-floor connectors are disconnected, a NO START condition will result.
  NOTE: The medium speed controller area network (MS-CAN) circuits that pass through the driver seat harness are part of the main MS-CAN LOOP. If the front driver seat-to-floor connectors are disconnected, various MS-CAN modules will not be able to communicate.
  The front seats can be equipped with the following systems:
  
  • Two-way manual seat track (passenger only)
  • Four-way manual seat track (driver only)
  • Six-way power seat track
  • Manual recline
  • Power recline
  • Backrest, without fold flat
  • Backrest with fold flat (optional, passenger only)
  • Heated seats
  • Heated/cooled climate controlled seats
  • Memory driver seat
  • Manual lumbar (driver only)
  • Power lumbar
  • Adjustable head restraints
  • Seat side air bags (standard)
  • Occupant classification sensor (OCS) system on passenger seat
  
  Driver Seat Module - Memory Seat
  The power driver seat, power outside rear view mirrors and power adjustable pedals are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option. The DSM is located on the driver seat track.
  This system allows automatic positioning of the driver seat to 2 programmable positions.
  
  • A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat switch assembly. The driver must then depress the memory SET switch which activates the memory SET switch light emitting diode (LED). Within 5 seconds (before the LED goes out), the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
  • If no memory switch input is received within the 5-second time limit, the operation is aborted and the memory seat position switch (set switch) LED is turned OFF. This also occurs if one of the following inputs is received during the 5-second programming limit:
    • Driver seat control switch
    • Memory seat position switch (set switch)
    • Power adjustable pedal switch
  A programmed seat position can only be recalled when the transmission selector is in PARK or NEUTRAL with the ignition switch in the RUN position. A position may be programmed at any time.
• Principles of Operation
  Driver and Passenger Power Seats Without Memory
  The driver and front passenger power seat motors are hardwired to the seat control switches on each respective seat. The circuits are normally at ground through the seat control switch. Each individual seat track, recliner (if equipped) and lumbar (if equipped) motor circuit is switched to power when the specific adjustment position is selected.
  
  Power Driver Seat With Memory
  The driver power seat is controlled by the driver seat module (DSM), if equipped. The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switch or a remote keyless entry (RKE) transmitter. There are 2 memory settings possible. The outside rear view mirror positions are also stored and recalled with the power driver seat positions.
  The DSM is located underneath the driver seat cushion frame. The DSM does not require calibration to the driver seat track.
  The driver seat control switch provides voltage to the DSM when activated. The NEUTRAL position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate circuit from ground to power for operating the motors.
  As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor.
  The DSM communicates diagnostic trouble code (DTC) and other information using the MS-CAN communication bus. It should be noted for diagnostics that because CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for information concerning MS-CAN bus communication.

Do you have memory or not ?

Taking the vehicle to a qualified repair shop an having a diagnostic scan of the seat module's done could save time an money , by not replacing parts needlessly .

http://bbbind.com/free_tsb.html

Your missing something's G-404 has nothing to do with it !
Seats - Third Row
The third row seat:

• is three-passenger seat.
• a 60/40 bench seat.
• folds down for more cargo area.
• has optional power fold down seats.

Third Row Power-Fold Seat
CAUTION: To prevent possible damage to the third row seat or the safety belts, make sure that the safety belts are not fastened when moving the seat to the load floor position.
CAUTION: Make sure that no objects such as books, purses or briefcases are on the floor in front of the third row seats or on the seat cushion before lowering the backrest(s).
The third row power-fold seat consists of the following electrical components:

• right third row seat relay.
• left third row seat relay.
• right power-fold seat motor.
• left power-fold seat motor.
• right front third row seat switch (if equipped).
• left front third row seat switch (if equipped).
• right rear third row seat switch.
• left rear third row seat switch.

For the third row power-fold seat to operate, a shared ground is supplied by the body security module (BSM) to both of the power-fold seat relays, enabling the seats to then be moved by pressing one of the third row power-fold seat switches. The third row power-fold seat operates only when the vehicle is in PARK and the liftgate glass, liftgate door or any entry door must be open.
The third row power-fold seat motors transfer movement to a drive gear assembly to raise and lower the seat backrest. The power-fold seat motors rotate a short drive cable which is connected to the drive gear assembly.
The relay's are located in Aux. relay box #2

power seat are usually protected by Breaker not fuse. located in fuse block (small piece of metal square)
check wires under seat and under carpet with test light for positive wire and ground.

If NONE of the functions work for the driver's seat, I would suspect a boken wire. Check the ORANGE wire on Pin "L" at the seat switch connector. This should have power at all times.

Pin "A", the BLACK wire should be ground. It grounds at G200, which is located in the left front kick panel.

If both of these wires are good and functioning properly, then you most likely have a fried seat control switch.

The seats are not fused they are on a circuit breaker. In the dash fuse block located on the end of the dash on the drivers side you should be able to see 2 metalic looking "fuses". Those are the circuit breakers. Circuit breaker 1 is for the power seat. You can try swapping them and see if the seat works. If it still doesn't work than you will need to check for power and ground at the seat.

You should be able to find a connector under the seat that has a red with light blue wire and a black with white wire. The red with light blue should have power all the time. The black with white is the ground.

Let me know what you find or if you have additional questions.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

First check owners manual for seat fuse location in fuse box....You will need a test light to check fuses and switch power...(with ignition on)...If fuses are good check wiring from switch to seat motor If you have power the motor has failed...Sometimes you can insert test light into ground andmotor will start to work because of Internal Ground problems at seat motor or connection...
It could be as simple as a bad connection at switch under seat ...............Hope this helps....................................Metalpoet

There should be a Circuit Breaker located within the Wiring Harness under the Driver Seat. Check this breaker and also the Ground.
There "maybe" also a Relay located between the switch and the motor. Check for voltage to this relay, and also this Ground.
With the Engine OFF: Try to move the seats in all directions. If the motor clicks, and the seat doesn't move: the Motor assembly must be replaced.

Swap it with a relay you know to be good and see if it works again,pick a relay that is not important to the function of your car.