Which relay controls the electric windows in my 30 lx tdi

I could see one window not working from a broken wire inside the door flex , but not both back windows . Back windows are controlled by LF door module . Both back windows have different grounds - LR G200 an RR G201 . Also both rear window switches have different power supply's .RR switch fuse # 18 30 amp . LR is fuse b# 9 40 amp . Both window motors or switche's going out at same time ???? wouldn't think so .

• Driver door module circuits open/shorted.
• Loose, corroded connectors.
• Damaged window regulator control switch.
• Damaged window regulator electric drive.
• Open fuse in fuse junction panel Fuse 39 (10A), 28 (10A), 30 (10A).
• Open fuse in power distribution box Fuse 9 (40A), 10 (40A), 8 (40A).
• Glass, Frames and Mechanisms
  
  Inspection and Verification
  
  1. Verify the customer's concern by operating the power windows/heated back window to duplicate the condition.
  1. Inspect to determine if one of the following mechanical or electrical concerns apply:
     
     
     VISUAL INSPECTION CHART Mechanical Electrical
     • Front door power window regulator damaged.
     • Front window run damaged.
     • Front door window glass out of window run.
     • Front door window glass broken.
     • Driver door module circuits open/shorted.
     • Loose, corroded connectors.
     • Damaged window regulator control switch.
     • Damaged window regulator electric drive.
     • Open fuse in fuse junction panel Fuse 39 (10A), 28 (10A), 30 (10A).
     • Open fuse in power distribution box Fuse 9 (40A), 10 (40A), 8 (40A).
     • Scratched grid.
  1. If inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with Inspection and Verification.
  1. If the concern remains after inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the data link connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for the driver door module, go to Pinpoint Test A . If the NGS responds with NO RESPONSE/NOT EQUIPPED for the lighting control module, go to Pinpoint Test B . If the DATA LINK DIAGNOSTICS test is passed for the drivers door module and lighting control module, retrieve continuous DTCs and execute Self Test Diagnostics for the driver door module and lighting control module to retrieve current DTCs.
  1. If self test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics.
  1. If DTCs are retrieved, go to the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index or Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If the driver door module cannot be accessed by the NGS, GO to Pinpoint Test A . If the lighting control module cannot be accessed by the NGS, go to Pinpoint Test B .
  Rotunda Service Bay Diagnostic System (SBDS®) 001-00001 may also be used to diagnose this system.
  
  • Power Windows Completely Inoperative
  • Supply open or shorted.
  • Ground open.
  • Window regulator control switch inoperative.
  • Circuits open or shorted.
  • Window regulator electric drive inoperative.
  • Driver door module.
  • PERFORM driver door module self test. Service DTCs. If no DTCs are retrieved, GO to Pinpoint Test C .
  • Single Power Window Inoperative
  • Window regulator electric drive circuits.
  • Window regulator electric drive.
  • Window regulator control switch circuits.
  • Window regulator control switch.
  • Driver door module.
  • GO to Pinpoint Test D .

Relay maybe .Doesn't look like a relay is involved for window . Looking at a wiring diagram an using a volt meter to test electrical circuit would be the way to find the problem . Do you know how to test automotive electrical circuits ? How to read a wiring diagram ?
Midgate Components
The midgate consists of the following components:
• Midgate window switch
• Midgate latch release switch
• Midgate window regulator
• Left midgate latch
• Right midgate latch
• Midgate latch relay
• Midgate 25-amp window regulator circuit breaker
• Midgate 15-amp latch relay circuit breaker

Midgate Window Control
The midgate window is controlled by the following:
• Midgate window switch
• Midgate 25-amp window regulator circuit breaker

Reading a little more from service repair manual i do see a relay , it's part of the window motor assembly . Could possibly be the window regulator . You need to take midgate panel off an look inside . Test electric to the motor while in then .
Midgate Window Operation
When the midgate window switch is activated to Up, battery voltage is supplied to the coil of the midgate window up relay in the window motor, energizing the relay. When the window up relay is energized, the window is driven in the Up direction.
When the midgate window switch is activated to Down, battery voltage is supplied to the coil of the midgate window down relay in the window motor, energizing the relay. When the window down relay is energized, the window is driven in the Down direction.

xTooltipElement
Service Information
2004 GMC Truck Envoy - 2WD ' Bravada, Envoy, Rainier, TrailBlazer (VIN S/T) Service Manual ' Body ' Body Rear End ' Repair Instructions ' Document ID: 1252579
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Midgate Window Regulator Replacement
Removal Procedure
Remove the midgate inner panel. Refer to Midgate Inner Panel Replacement .
Remove the midgate window. Refer to Midgate Window Replacement .
Disconnect the midgate window regulator electrical connector (1).
Remove the midgate window position switch (2) from the window regulator. Refer to Midgate Window Position Switch Replacement .
Remove the nuts retaining the window regulator to the midgate.
Remove the regulator from the midgate.
Installation Procedure
Install the regulator to the midgate.
Notice: Refer to Fastener Notice in the Preface section.
Install the nuts retaining the window regulator to the midgate.
Tighten
Tighten the window regulator nuts to 25 N·m (18 lb ft).
Install the midgate window position switch (2) to the window regulator. Refer to Midgate Window Position Switch Replacement .
Connect the window regulator electrical connector (1).
Install the midgate window. Refer to Midgate Window Replacement .
Check and adjust the midgate window alignment to the weatherstrip channel. Refer to Midgate Window Replacement .
Install the midgate inner panel. Refer to Midgate Inner Panel Replacement .
© 2019 General Motors Corporation. All rights reserved.

Did you check the fuse ? Do you hear the wiper motor running ? If the fuse is good you would need to test the electrical circuit for the wiper motor ,viewing a wiring diagram an then use a DVOM - digital volt ohmmeter to test
What body type is it ? Vin 6 or 3 could have a circuit breaker for power supply or fuse ,both are located in the rear fuse block .

Rear Wiper/Washer System Components
The rear wiper/washer system consists of the following components:
• Rear window wiper motor
• Rear window washer fluid pump
• Rear wash relay
• Rear window wiper/washer switch
• RR wiper 15A circuit breaker
• WASH 20A fuse
Rear Wiper/Washer System Controls
• Body control module (BCM)
• Liftgate control module (LGM)
• Rear wiper/washer switch

Here is how it is controlled

Rear Wiper/Washer System Operation
The rear window wiper/washer switch is an input to the BCM. The requested rear wiper mode is sent to the liftgate control module (LGM) by the BCM as a message on the serial data circuit, and 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 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 wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear 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. The rear window washer pump is controlled by the BCM through the rear washer relay. Battery positive voltage is supplied to the coil and switch sides of the rear washer relay. When the rear window wash request is active the BCM energizes the relay by grounding the relay coil through the rear washer relay control circuit. When the relay is energized battery positive voltage to the relay switch is supplied to the washer pump control circuit.

Your best bet mite be to have a qualified repair shop check for codes in the BCM or LGM
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DTC B1017 or B3970

The rear wiper motor is supplied battery positive voltage and ground. The liftgate control module controls rear wiper motor operation through the rear wiper motor control circuit. The rear wiper motor control circuit is supplied a battery positive reference voltage by the rear wiper motor module and is pulse width modulated to ground by the liftgate control module. The duty cycle of the pulse width modulation determines the rear wiper motor operating mode.

There is a circuit breaker for power windows .
Power Window System Components
The power window system consists of the following components:
?€¢
Driver Door Switch (DDS)

?€¢
Passenger Door Switch (PDS)

?€¢
Body Control Module (BCM)

?€¢
Rear door power window switches

?€¢
Power window motors in each of the doors

?€¢
PWR WDO Circuit Breaker

Power Window System Controls
The power window system will operate anytime the Retained Accessory Power (RAP) system is active or when the ignition switch is in the ACCY or ON position.
The driver master control switches are integrated into the DDS. When a power window switch is activated in the up or down positions the DDS 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 DDS 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 DDS continues to monitor the motor current to verify proper window motor operation.
The DDS controls the passenger window by a serial 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 this circuit breaker
RETAINED ACCSRY PRW BRKR 30 amp. located in the left instrument panel fuse box . if the breaker is good check power B+ at the drivers door switch . connector 1 terminal b yellow wire . Sometimes the wires inside the rubber boot coming from body to door break .

Principles of Operation
The driver power window regulator motor is controlled directly by the master window/door lock/unlock switch (and its integrated "auto down" module). Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The driver power window regulator motor is a reversible motor that is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The passenger power window regulator motor is controlled directly by the passenger power window switch and can also be controlled by the master window/door lock/unlock switch. Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The passenger power window regulator motor is a reversible motor, which is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The power rear quarter glass is also directly controlled by the master window/door lock/unlock switch. The power rear quarter glass power latches also utilize reversible motors. The power rear quarter glass power latches are operated by applying power and ground to the motor leads to open the window, and then reversing polarity on those same leads to close the window.
Visual Inspection Chart Mechanical Electrical

• Improperly aligned window
• Damaged window mounting
• Window frame interference

• Central junction box (CJB) Fuses:
  • F30 (10A)
  • F32 (20A)
  • F34 (20A)
  • F59 (7.5A)
• Battery junction box (BJB) Fuses:
  • F20 (30A)
  • F27 (45A)
• Switches
• Circuits
• Connectors
• Heated back light
• Relays

Which window is not working ?

• Single power window is inoperative

• Front door power window switch.
• Front door power window regulator.
• Circuit.
• Driver door power window switch.

• GO to Pinpoint Test B .

Did you check for battery voltage at the switch , with a volt meter before you replaced the main driver door switch ? Maybe you'll want to take this to pro ,instead of just replacing parts !
Symptom Chart Condition Possible Sources Action

• No communication with the smart junction box (SJB)

• Circuitry
• SJB

• REFER to Section 419-10 .

• A single power window is inoperative - driver front power window is inoperative/does not operate correctly

• Power window motor regulator and motor
• Circuitry
• Window control switch
• Smart junction box (SJB)

• Go To Pinpoint Test A .

• A single power window is inoperative - passenger front, left rear or right rear

• Power window motor regulator and motor
• Circuitry
• Window control switch

• Go To Pinpoint Test B .

• All power windows are inoperative

• Smart junction box (SJB) fuse 30 (10A)
• SJB circuit breaker 10 (30A)
• Circuitry
• Delayed accessory relay
• Battery saver relay
• Driver window control switch
• SJB

• Go To

PINPOINT TEST C: ALL POWER WINDOWS ARE INOPERATIVE Test Step Result / Action to Take C1 CHECK FOR CORRECT OPERATION OF THE INTERIOR LIGHTS

• Turn on the interior lights.
• Do the interior lights operate normally?

Yes
GO to C2 .

No
To continue diagnosis, REFER to Section 417-02 . C2 CHECK CIRCUIT 400 (LB/BK) FOR VOLTAGE TO THE DRIVER WINDOW CONTROL SWITCH

• Disconnect: Driver Window Control Switch C504b.
• Key in ON position.
• Measure the voltage between the driver window control switch C504b pin 4, circuit 400 (LB/BK), harness side and ground.
  >
• Is the voltage greater than 10 volts?

Yes
GO to C4 .

No
GO to C3 . C3 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN OR SHORT TO GROUND

• Key in OFF position.
• Disconnect: SJB C2280c.
• Measure the resistance between the driver window control switch C504b pin 4, circuit 400 (LB/BK), harness side and the SJB C2280c pin 17, circuit 400 (LB/BK), harness side; and between the driver window control switch C504b pin 4, circuit 400 (LB/BK), harness side and ground.
  >
• Is the resistance less than 5 ohms between the driver window control switch and the SJB; and greater than 10,000 ohms between the driver window control switch and ground?

Yes
Go To Pinpoint Test H

No
REPAIR the circuit. TEST the system for normal operation.

Until you get yourself a wiring diagram & change the
way you go about testing electrical circuits-your done

Why a new switch--no testing of the old one?

Checked the motor how-removed the door panel
& put battery voltage directly to --it in both directions?

All the other windows work?

No power to the window switch (need wiring diagrams there)

Wiring going into door not a problem !

There is a black rubber flex boot between the body an the door ,power and ground wire's for the switch run through it . Opening an closing the door over time can cause the wires to break . Pulling the door inside trim panel to get to the switch wiring connector to test for B+ voltage an ground is the way to test electrical . Looking at a wiring diagram to see what wire is what should be done also. Do power lock's work ?

Window Operation
The window system operates under the control of the accessory delay relay. The smart junction box (SJB) will ground the coil side of the accessory delay relay when the ignition switch is in the ON position. When the accessory delay relay is active, power is supplied to each window control switch. The window control switches direct power and ground to the appropriate power window motor.

If the other windows work ,it's not a fuse problem . Broken wire's ,master switch !

There should be a relay. Probably located in the PDU box under the hood. If not the motor might be going bad.

This may be just a case of inadvertently hitting the window lock out n th driver door window switch by mistake. Check that first. Here's some background on window operation

Principles of Operation
The driver power window regulator motor is controlled directly by the master window/door lock/unlock switch (and its integrated "auto down" module). Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The driver power window regulator motor is a reversible motor that is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The passenger power window regulator motor is controlled directly by the passenger power window switch and can also be controlled by the master window/door lock/unlock switch. Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The passenger power window regulator motor is a reversible motor, which is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The power rear quarter glass is also directly controlled by the master window/door lock/unlock switch. The power rear quarter glass power latches also utilize reversible motors. The power rear quarter glass power latches are operated by applying power and ground to the motor leads to open the window, and then reversing polarity on those same leads to close the window.
Symptom Chart Condition Possible Sources Action

• All windows are inoperative

• BJB Fuse:
  • F20.
• Circuit.
• Power window relay.
• Front door power window switch.

• GO to Pinpoint Test A .

• Single power window is inoperative

• Front door power window switch.
• Front door power window regulator.
• Circuit.
• Driver door power window switch.

• GO to Pinpoint Test B .

• Vent power window is inoperative — quarter window glass power latch

• Circuit.
• Quarter window glass switch.
• Quarter window glass power latch.

• GO to Pinpoint Test C .

• The one touch down feature is inoperative

• Master window regulator and door lock switch.

• INSTALL a new master window/door lock/unlock switch. REFER to Switch—Master Window Door Lock/Unlock .

• The back window will not defrost

• CJB Fuses:
  • F30 (10A).
  • F32 (20A).
  • F34 (20A).
• BJB Fuse:
  • F27 (45A)
• Circuit.
• Heated back window switch.
• SEC/timer module.
• Rear window defrost relay.

• GO to Pinpoint Test D .

• The back window defrost will not shut off automatically

• SEC/timer module.
• Circuit.
• Rear window defrost relay.

• GO to Pinpoint Test E .