DORMAN 740-521 Front Passenger Side Power Window Regulator Installation Guide

DORMAN 740-521 Front Passenger Side Power Window Regulator

Specifications

• Easy installation and removal
• Requires specific tools for assembly
• Recommended for use with silicone spray
• Ensure to wear safety glasses during installation

Product Usage Instructions

Removal Instructions

• STEP 1: Start by gently prying at the plastic cover located behind the inner door handle. Remove this piece and set it aside.
• STEP 2: Pull up on the inner door lock knob and use a pick to pull the release button out.
• STEP 3: Using a Phillips head screwdriver, remove the screw behind the inner door handle.
• STEP 4: Use your non-marring pry tool to lift on the window switch panel, and then disconnect the plug. Set the window switch aside.
• STEP 5: Gently pry around the outside of the door panel with your non-marring pry tool to pop out the plastic clips.
• STEP 6: Lift on the door panel to free the clips in the centre of the door panel.

NOTE: Do this carefully, as the clips break easily. Once the panel is free, remove the large blue plug from the door panel.

FAQ

• Q: Do I need any special tools for installing the window regulator?
• A: Yes, specific tools are required for the assembly and removal of the window regulator and motor assembly. It is recommended to refer to the appropriate shop manual for your vehicle for detailed instructions on tool requirements.
• Q: Can I install the window regulator myself if I lack experience?
• A: 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 qualified technician to ensure proper installation and safety.

ATTENTION: Refer to the appropriate shop manual for your vehicle to obtain specific 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 qualified technician. Pay special attention to all cautions and warnings included in the shop manual. Read and follow all instructions carefully.

REMOVAL/INSTALL OF WINDOW REGULATOR (740-521) Cadillac Deville 2000–05

General Tech Tips

• Use painter’s tape rather than duct tape to secure the window. It’s less likely to damage paint or leave a 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 the 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 the installation of a new window regulator assembly. Silicone spray works well.

PLEASE WEAR SAFETY GLASSES!

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

• Silicone spray lubricant
• Trim panel removal tool
• Pick
• Saddle cup assembly, tape, or wedge to hold the window in place
• Flat-blade screwdriver or plastic pry tool
• 10mm socket or driver
• Phillips screwdriver
• Grease pencil or marker
• T-15 Torx bit

Removal Instructions

• STEP 1: Start by gently prying at the plastic cover located behind the inner door handle. Remove this piece and set it aside.

• STEP 2: Pull up on the inner door lock knob and use a pick to pull the release button out.

• STEP 3 : Using a Phillips head screwdriver, remove the screw behind the inner door handle.

• STEP 4: Use your non-marring pry tool to lift up on the window switch panel, and then disconnect the plug. Set the window switch aside.

• STEP 5: Gently pry around the outside of the door panel with your non-marring pry tool to pop out the plastic clips.

• STEP 6: Lift on the door panel to free the clips in the centre of the door panel.

NOTE: Do this carefully, as the clips break easily. Once the panel is free, remove the large blue plug from the door panel.

• STEP 7: Once the panel and harness are removed, use your T-15 Torx bit driver to remove the two Torx screws in the centre of the panel. Pop out the two plastic clip guides.

• STEP 8: Move around the outside of the black inner panel and pop the centre of the ten (10) plastic clips using either a pick or a small at-bladed screwdriver. Then remove the black panel and set it aside.

• STEP 9: Using your pick, remove the motor clip from the motor.

• STEP 10: Brace the window glass using a saddle cup assembly, painter’s tape, or a wedge.

• STEP 11: Remove the three (3) 10mm bolts from the regulator rails.

• STEP 12: Remove the regulator and motor from the large opening in the door skin.

Installation Instructions

• STEP 1: Place the new regulator and motor through the large opening in the door skin

• STEP 2: Attach the three (3) 10mm bolts to the regulator rails.

• STEP 3: Remove the saddle cup assembly, painter’s tape, or wedge that braces the window glass.

• STEP 4: Replace the motor clip on the motor.

• STEP 5: Replace the black inner panel, and pop in the ten (10) plastic clips that attach the black panel.

• STEP 6: Pop in the two plastic clip guides and use your T-15 Torx bit driver to attach the two Torx screws in the centre of the panel.

• STEP 7: Attach the large blue plug to the door panel.

• STEP 8: Attach the door panel to the door skin, and attach the window switch panel to the door panel.

• STEP 9: Using a Phillips head screwdriver, attach the screw behind the inner door handle.

• STEP 10: Pull the inner door lock knob through the door panel.

• STEP 11: Replace the plastic cover located behind the inner door handle.

• STEP 12: Verify that all of the interior door trim panel attaching hardware is secure and that the window regulator is operating properly.

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 qualified auto technician before attempting to perform any work you are not qualified 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 Traffic Safety Administration). Be sure that your work is performed per such standards and that you do not disable any motor vehicle safety features.

©2013 Dorman Products, Inc.
No reproductions in whole or in part without prior written approval.

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