DORMAN 742-123 Power Window Motor Instruction Manual

DORMAN 742-123 Power Window Motor

Specifications

• Part Number: 742-123
• Compatible Vehicles: Cadillac Escalade, Chevrolet Suburban,
  Chevrolet Tahoe, GMC Yukon

Removal Instructions

STEP 1: Gain access to the window regulator assembly by following these sub-steps:

• Gently pry around plastic mirror trim piece and remove.

• Gently pry around handle bezel and remove bezel.

• Gently pry around switch and remove switch.

• Disconnect electrical connections to switch.

• Gently pry around door lock bezel, unsnap it from the door
  panel, unclip from door lock rod, and remove.

• Using a 7mm socket, remove the 3 highlighted screws.

• Lift trim panel up and remove from the door.

FAQ

Frequently Asked Questions:
Q: What tools are required for the removal and  installation of the window regulator and motor assembly?
A: Tools required include safety glasses, a 7mm socket, and silicone spray for assembly.

INSTALL/REMOVAL INSTRUCTIONS: WINDOW LIFT MOTOR

ATTENTION: Refer to the appropriate shop manual for your vehicle to obtain specifi c service procedures for this part. If you do not have a service manual or lack the skill to install this part, it is recommended that you seek the services of a qualifi ed technician. Pay special attention to all cautions and warnings included in the shop manual. Read and follow all instructions carefully.

REMOVAL/INSTALL OF WINDOW LIFT MOTOR (742-123)
Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, GMC Yukon, Chevrolet Silverado, GMC Sierra 2000–05v

General Tech Tips:

• Use painter’s tape rather than duct tape to secure window. It will not damage paint or leave sticky residue.
• A plastic pry tool is useful. It will not easily damage delicate trim like a screwdriver or metal pry bar.
• The replacement regulator should have a liberal amount of grease on slide area. If there is not much grease present, white lithium grease works well to lubricate the slide area.
• Aftermarket window tinting can cause the window to travel slower and put additional strain on the window regulator assembly.
• Window run channels should be cleaned and lubricated before installation of a new window regulator assembly. Silicone spray works well.

Tools required for removal and installation of window regulator and motor assembly

• Phillips screwdriver
• Pry bar with fl at end
• 7mm socket
• 10mm socket
• Socket wrench
• Wooden wedge or wide tape
• Silicone spray lubricant

PLEASE WEAR SAFETY GLASSES!

Removal Instructions

1. STEP 1: Gain access to the window regulator assembly by removing the interior trim panel.

   • STEP 1a: Gently pry around plastic mirror trim piece and remove.

   • STEP 1b: Gently pry around handle bezel and remove bezel.

   • STEP 1c: Gently pry around switch and remove switch.

   • STEP 1d: Disconnect electrical connections to switch.

   • STEP 1e: Gently pry around door lock bezel and unsnap it from door panel. Unclip from door lock rod and remove.
     STEP 1f: Using a 7mm socket, remove the 3 highlighted screws.
     

   • STEP 1g: Lift trim panel up and remove from door.

2. STEP 2: With interior panel removed, peel back the plastic water barrier enough to be able to remove the regulator. Do not damage or discard plastic barrier, it will need to be reinstalled.

3. STEP 3: Reconnect the window switch electrical connector.
   STEP 3a: Move the window into a position where you can access the 10mm bolts that hold the window guide clamps.

4. STEP 4: Loosen the 10mm window guide bolts enough so that the window can be separated easily from the clamps. Do not remove the bolts or loosen all the way. The window glass needs to be supported by the clamps until the glass is secured.

5. STEP 5: Operate the switch or manually push the window into the full up position. Secure the window in place using a wooden or rubber wedge between the door frame and the window or simply tape the window to the door frame. Be careful to use tape that does not damage the paint on the door frame.

6. STEP 6: Disconnect the electrical plug from the window lift motor.

7. STEP 7: Remove the six 10mm window regulator mounting bolts that secure the window regulator to the door frame.

8. STEP 8: Remove the left side track.

9. STEP 9: Remove the right side track.

10. STEP 10: Remove the three (3) window lift motor attaching screws.

11. STEP 10a: The door is now ready for installation of the replacement part.

Installation Instructions

1. STEP 1: Install the window lift motor with the three (3) attaching screws.
   STEP 1a: Loosen window guide clamp bolts on replacement window regulator enough for clamps to easily slide over window glass.

2. STEP 2: Install the right side track into the door.

3. STEP 3: Install the left side track into the door

4. STEP 4: Move the window regulator into the proper position and line up the bolt holes. Install the 10mm bolts that were removed but do not completely tighten. The bolts should remain loose so that the regulator can be moved around for proper fi nal alignment.

5. STEP 5: Reconnect the window lift motor electrical plug.
   

6. STEP 6: Remove tape or wedge from the window and door frame and lower window into the window guide clamps making sure that the window is correctly seated in the guides.

7. STEP 7: Operate the window lift motor using the switch and send the window to the] top position making sure that it is aligned properly in the window guide clamps and is parked properly at the top of its travel. Tighten the 10mm window clamp guide bolts evenly and torque to 9 N-m (80 lb in).

8. STEP 8: Tighten the six 10mm regulator mounting bolts in the following order: Bolt A, D, C, F, B, E. Tighten the bolts to 9 N-m (80 lb in).

9. STEP 9: Lubricate the window run channels.

10. STEP 10: Operate the window up and down using the switch making sure that the glass moves smoothly and is seated properly in the run channel.

11. STEP 11: Disconnect the window switch.

12. STEP 12: Reinstall the plastic water barrier making sure the wires are poking through the correct holes.

13. STEP 13: Reinstall the interior trim panel.

    • STEP 13a: Starting at the top of the door frame, hang the panel on the top lip and move into place making sure that the electrical wires are pushing through the proper holes in the door panel. Make sure door handle is properly aligned with the hole in the door panel and that the door lock rod protrudes through correct hole in door panel.
    • STEP 13b: Reinstall the three 7mm bolts that hold the panel to the door frame.
    • STEP 13c: Reconnect window switch electrical plugs and snap switch into place on the door panel.
    • STEP 13d: Maneuver handle bezel around door handle and snap into place.
    • STEP 13e: Snap plastic mirror cover back into place.

14. STEP 14: Perform a fi nal operational check of window regulator assembly by operating the window up and down to ensure proper performance.

We appreciate your opinions regarding this product!
Please call our technical assistant with any challenges or suggestions regarding the installation or operation of this product.
1-800-523-2492

Disclaimer:
Even though every attempt is made to ensure this information is complete and accurate, it is impossible to account for all possible circumstances or situations. Please consult with a qualifi ed auto technician before attempting to perform any work you are not qualifi ed to do. Automobiles can be hazardous to work on; be sure to take all necessary safety precautions. Failure to do so may result in property damage or personal injury. Certain motor vehicle standards and performance requirements may apply to your motor vehicle (such as Federal Motor Vehicle Safety Standards by the National Highway Traffi c Safety Administration). Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature.

©2011 Dorman Products, Inc.
No reproductions in whole or in part without prior written approval.

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