I need a left rear window motor, the one that opens the window like four inches out.

On the rear frame rail of the sunroof assembly. Approximately between the drivers and left rear passenger head. Imagine the sunroof window fully open and then add 2-3 inches. So above the left rear passengers lap.

The power windows on your vehicle are controlled by an electronic control module , as are the power mirrors !
Power Window System Components
The power window system consists of the following components:
• Driver door module (DDM)
• Passenger door module (PDM)
• Body control module (BCM)
• LR power window switch
• RR power window switch
• Window up and window down relays in each of the rear passenger window switches
• Window lockout switch
• Reversible power window motors in each of the doors (circuit breaker protected)
• LT DOOR CB 25A (System power for left rear window)
• RT DOOR CB 25A (System power for right rear window)

Your best bet , take your vehicle to a qualified repair shop.

Blower Motor Removal & Installation Front To Remove:
NOTE: The blower motor is positioned on the passenger side of the vehicle beneath the instrument panel, and can be removed from the vehicle without removing the HVAC housing.

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Passenger side cowl trim panel
   • Carpet to access the front upper screw that secures the air inlet housing
   • Recirculation door actuator
   • Recirculation door actuator wire lead from the routing clip located on the lower air inlet housing and position the wire lead aside
   • Blower motor wire lead connector from the blower motor resistor or power module, depending on application. Lower Air Inlet Housing
     
     
   • One screw (from the top) that secures the lower air inlet housing to the upper air inlet housing
   • Four screws (from the bottom) that secure the lower air inlet housing to the upper air inlet housing and remove the lower HVAC housing Blower Motor Wire Lead Grommet
     
     
3. Feed the rubber blower motor wire lead grommet through the opening in the lower air inlet housing.
4. Push the blower motor wire lead through the opening in the lower air inlet housing and remove the lower air inlet housing from the vehicle.
5. Place the recirculation-air door as needed to access and remove the three screws that secure the blower motor to the lower half of the HVAC housing.
6. Lightly bend the recirculation air door far enough down to remove the blower motor and wheel from the HVAC housing. Blower Motor Mounting Tabs
   
   
7. Remove the blower motor and wheel from the HVAC housing. Make a note of the location of the blower motor mounting tabs.

To Install:

1. Install or connect the following:
   • Blower motor and wheel to the lower half of the HVAC housing and line up the blower motor mounting tabs to the correct location on the HVAC housing
   • Blower motor and wheel into the HVAC housing by lightly bending the recirculation-air door far enough down
   • Three screws that secure the blower motor to the HVAC housing by positioning the recirculation-air door as needed
     1. Torque to: 17 inch lbs. (2 Nm)
   • Blower motor wire lead through the opening in the lower air inlet housing and seat the rubber grommet into the lower air inlet housing
   • Recirculation-air door pivot into the lower air inlet housing
   • Four screws (from the bottom) that secure the lower air inlet housing to the upper air inlet housing and the lower HVAC housing
     1. Torque to: 17 inch lbs. (2 Nm)
   • One screw (from the top) that secures the lower air inlet housing to the upper air inlet housing
     1. Torque to: 17 inch lbs. (2 Nm)
   • Blower motor wire lead connector to the blower motor resistor or power module, depending on application
   • Recirculation door actuator wire lead into the routing clip located on the lower air inlet housing
   • Recirculation door actuator
   • Carpet
   • Passenger side cowl trim panel
   • Negative battery cable
2. Perform the heater-A/C control calibration procedure.

Rear To Remove:
NOTE: The rear blower motor and blower wheels are repaired only as a balanced unit. The entire blower motor and wheel assembly must be replaced if either component is fault or damaged.

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Remove or disconnect the following:
   • Front center floor console cover
   • Negative battery cable Rear Blower Motor Housing
     
     
   • Body wire harness connectors from the rear blower motor power module and the rear mode door actuator
   • Body wire harness bracket from the console support bracket
   • Eight screws and the two console support brackets from the floor console base and duct assembly
   • Four screws that secure the rear blower motor housing to the floor console base and duct assembly
   • Rear blower motor housing and place it on a bench
   • Rear blower motor wire harness connector from the power module
   • Eleven retaining clips and three screws that secure the housing together
   • Two halves of the housing
   • Blower motor wire harness and grommet from the housing and remove the blower motor

To Install:

1. Install or connect the following:
   • Rear blower motor into the housing and install the blower motor wire harness and grommet
   • Two halves of the rear blower motor housing and install the eleven retaining clips and three screws
     1. Torque to: 17 inch lbs. (2 Nm)
   • Rear blower motor wire harness connector to the rear blower motor power module
   • Rear blower motor housing into the floor console
   • Four screws that secure the rear blower motor housing to the floor console base
     1. Torque to: 17 inch lbs. (2 Nm)
     2. Two console support brackets onto the floor console base
     3. Eight screws that secure the support brackets to the floor console base
        1. Torque to: 17 inch lbs. (2 Nm)
     4. Body wire harness bracket onto the console rear support bracket
     5. Body wire harness connectors to the rear blower motor power module and the rear mode door actuator
     6. Negative battery cable
     7. Front center floor console
2. Calibrate the A/C-heater control.

The sunroof is powered by the same circuit breaker that power's your power window, so if your windows work than the circuit breaker should be good. You needed test the switch to verify if works with; on the factory sunroof system the roof is controled by a sunroof module the module receives a signal from the switch then throws voltage to the sunroof motor. The motor and module are located between the sunroof assembly and windshield underneath the head liner. You would reconnected the switch and test to see if the sunroof motor is getting power when the switch is in use by testing the dark green wire when closing and a light green wire when opening. Test these wires at the sunroof motor with a ohm meter or test light. Also, check this procedure to repair...

GM S-Series Pick-ups and SUV's 1994-1999 Repair Guide Power Sunroof - REMOVAL & INSTALLATION

Glass

1. Close the sunroof and open the sunshade.
2. If the piece of glass being removed is to be reinstalled, mark the location of the screws, this will ensure proper alignment during installation.
3. Unfassten the screw that attach the sunroof glass to the sunroof assembly.
4. Remove the glass from the vehicle.
   

To install:

1. Place the glass into position and install the screws that retain the glass. Do not fully tighten the screws just yet.
2. Adjust the glass so that the fit between the glass and the opening is equal at all four sides. The rear edge of the glass may be slightly higher than the front edge to reduce the wind noise.
3. After the glass has been adjusted, tighten the screws to 31 inch lbs. (3.5 Nm).
4. Check the operation and fit of the glass.
   

Motor

1. Disconnect the negative battery cable.
2. Remove the sunroof opening trim by starting at the **** joint and pulling the trim strip from the sunroof opening.
3. Remove the headlines as follows:
   1. If equipped, remove the overhead or sunroof console.
   2. If equipped, remove the dome lamp.
   3. Remove the coat hooks and the assist handles.
   4. Remove the sunshade-to-roof screws, while pulling down on the sunshade base, push in on the extended screws, loosen the screw that attaches sunshade to the roof and pull down on the sunshade retainer while pushing in on the extended screw. Remove the retainer.
   5. Remove the windshield garnish moldings using trim removal tool J 38778 or its equivalent. Pull the molding away from the pillar and up to remove it.
   6. On four door models, remove the body lock pillar trim panels.
   7. Remove the roof rear header garnish molding using the trim removal tool. Insert the tool into the front edge of the trim and work along the front of the panel, from one end to the other. Unplug the cargo lamp electrical connection and remove the trim.
   8. On two door models, remove the rear seat upper seat belt anchor bolts.
   9. Remove the upper and lower front seat belt anchor bolts.
   10. Remove the rear seat belt lower anchor nut (two door models only).
   11. Remove the end gate or liftgate opening sill plate.
   12. Remove the jack storage cover (left side).
   13. Remove the upper body side trim panel screw (left side).
   14. Remove the upper body side trim panel and the body side front lower trim panel.
   15. Remove the headliner from the vehicle.
4. Remove the sunroof console mounting bracket.
5. Remove the straps that retain the wiring harness.
6. Tag and unplug any necessary electrical connections.
7. Unfasten the screws that attach the motor to the sunroof assembly.
8. Remove the motor from the vehicle. Make sure that you do not move the sunroof mechanism while the motor is not in place.
   

To install:

1. Place the motor into position and install the retaining screws. Tighten the screws to 31 inch lbs. (3.5 Nm).
2. Attach all electrical connections that were unplugged.
3. Attach the straps that retain the wiring harness.
4. Install the sunroof console mounting bracket.
   

New headliners must be pierced to accommodate actual vehicle accessories.

1. Install the headliner as follows:
   1. Install the body side front lower trim panel and the upper body side trim panel.
   2. Install the upper body side trim panel screw (left side).
   3. Install the jack storage cover (left side).
   4. Install the end gate or liftgate opening sill plate.
   5. Install the rear seat belt lower anchor nut (two door models only). Tighten to 59 ft. lbs. (80 Nm).
   6. Install the upper and lower front seat belt anchor bolts. Tighten the bolts to 52 ft. lbs. (70 Nm).
   7. On two door models, install the rear seat upper seat belt anchor bolts. Tighten the bolts to 52 ft. lbs. (70 Nm).
   8. Install the roof rear header garnish molding. Attach the cargo lamp electrical connection, place the trim in position and engage the molding retainers.
   9. On four door models, install the body lock pillar trim panels.
   10. Install the windshield garnish moldings. Place the molding into position, align the retainer clips with the slots and press into place.
   11. Place the sunshade retainer in position, install the screw and tighten to 10 inch lbs. (1.1 Nm). Position the sunshade, install the screws and tighten to 10 inch lbs. (1.1 Nm).
   12. Install the coat hooks and the assist handles.
   13. If equipped, install the dome lamp.
   14. If equipped, install the overhead or sunroof console.
       
2. Install the sunroof opening trim. Start the trim in the center of the front of the sunroof opening and work around the perimeter.

Hope helps (remember rated this) Good luck.

Crawl thru the front to the rear of the truck, Remove the two screws on the gate release handle (they are underneath the handle, two philips).
Gently pull on the plastic panel by the release handle, it will come out about 4 inches, it should be enough if you have a small arm (which I have.) I wedged a plastic 20oz bottle between the rear gate and the inner plastic panel, to keep the plastic held out, don't over stress the plastic it will break if its old enough, look down from the window hatch about 5 inches or so and notice the 2" x 3" opening, there is a lever in there that is moved by the actuator, and a piece of plastic (which is what my friends truck needs, if someone has a part number or aftermarket please advise) but if you reach in to that access panel, there is a slide that moves from right (looking at the gate from the inside) to left, moving it to the left (Opens the window)
Apon opening the window, remove the plastic bottle, and open the rear gate hatch, when the hatch is open there are two screws one on the left side of the gate, and on the right side.I hope this helps you out, remember: don't overstress the plastic, strip out the screws, or break the window..
Once you have everything out, you can replace the actuator or fix the wire leads that may have come loose form the rear door actuator keep you from opening the rear window.
Good luck and thank you for using fixya

Possible that the plastic gear on the motor has stripped

Window Regulator, Rear Door, Explorer Removal

1. Remove the rear door trim panel and watershield. Refer to Section 01-05B .

Trim Panel, Rear Door, Explorer, Hi-Series Four-Door Removal and Installation

1. Remove the two screws retaining the rear door trim panel (27406) located above the door handle.

1. Remove trim cup at the door handle using a screwdriver or sharp object. Retention nibs will flex for easy removal.

1. To remove window regulator switch plate (14524) , use notch located at lower end of plate using a screwdriver to lift and remove.

1. Remove window regulator switch plate from rear door trim panel pulling wire harness from rear door trim panel .

1. From bottom of window regulator switch plate , remove two screws and disconnect connector from window regulator control switch (14529) .

1. At each plastic clip location, pry the rear door trim panel away from the door inner panel using the door trim panel removing tool from Rotunda Moulding/Trim Kit 107-00401 or equivalent.

1. Remove panel, lift slightly to remove flange at the top of rear door trim panel from trough in the glass weatherstrip. For installation, follow removal procedures in reverse order. Replace any bent, damaged or missing plastic clips on the rear door trim panel to the door inner panel, firmly loading clips into slots provided on rear door trim panel .
   
   

1. If equipped with power windows, disconnect the wire from the regulator.

1. Remove the rear door window glass as described in this section.

1. Remove the window guide, if equipped, (nuts and washers). Remove guide from door belt opening.

1. Remove three 1/4-inch rivets attaching motor bracket (electric) to inner panel and two 1/4-inch rivets attaching regulator lower bracket to inner panel. Use drift punch to knock out center pins for each rivet. NOTE: Use care not to enlarge sheet metal holes in the door inner panel when drilling.
   

1. Using a 1/4-inch diameter drill, drill out the remainder of the rivet.

1. Remove two upper regulator attaching nuts.

1. Remove regulator from the front door (20125) .

Installation

1. Lubricate regulator mechanism with Multi-Purpose Grease D0AZ-19584-AA or equivalent.

1. Install regulator into access hole in inner panel.

1. Position regulator using upper regulator studs and tabs on motor mounting bracket (electric) or cup mounting plate (manual).

1. Install rivets attaching regulator to door inner panel (1/4-20 x 1/2-inch bolt and 1/4-20 nut and washer assemblies or equivalent metric fasteners may be used as alternates).

1. Install two upper regulator attachment nuts.

1. Install door glass as outlined under Door Glass Installation.

1. Adjust glass as outlined under Adjustments .

1. Reconnect wire to regulator, if equipped.

1. Check operation of window regulator.

1. Install door watershield and trim panel. Refer to Section 01-05B .

try a hard restart, if that doesnt work then you need a new rear window motor. for the hard restart all you have to do is disconnect the battery cables and touch the positive and negative together for about 8 seconds. if that fails then a new motor it is.

99% of the time its the window motor you gonna see soon its gonna go 1 inch up wait 5 or 10 minute go another inch change the window motor let me no owe it turn out pierre

Sounds like worn out motors pulling lots of amps to do the job in all thee cases, especially if the other windows are okay.
You can, if you're patient and cool, ( or know somebody who is...) swap the left rear window motor with the driver window motor.
My left rear was factory-new because nobody ever rode back there.
You have to use a motor from the same side, and the driver motor has to go into the left rear door
because it keeps the window up.
Be patient, take your time, allot and allow a complete day to do it and when it's done write a check to yourself. You'd have to write it to somebody, right???