Dorman 742-142 Power Window Motor Instructions

: June 1, 2024
: DORMAN

Table of Contents

Dorman 742-142 Power Window Motor
Specifications:

Dorman 742-142 Power Window Motor

Specifications:

Part Number: 742-142
Product: Window Lift Motor
Tools Required: Phillips head screwdriver, trim panel removal
tool, safety glasses, 3/8 drill, 3/8 drill bit

Removal Instructions

Using a Phillips head screwdriver, remove the interior door handle bezel retaining screw.
Using a trim panel removal tool or a small flat-blade screwdriver, remove the interior door trim panel retainer.
Using a trim panel removal tool, remove the power switch assembly.
Disconnect the power switch assembly.
Disconnect the window lift motor connector.
Using a 3/8 drill and 3/8 drill bit, remove the four (4) rivet heads attaching the window regulator to the door. Be cautious not to drill completely through the window regulator to avoid damagingthe door.

FAQ
Q: What if I don’t have the necessary tools?
A: It is recommended to have the specified tools for safe and] efficient removal and installation. If you don’t have them, consider seeking the assistance of a qualified technician.

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 (742-142)
Chevrolet S10 Blazer/Pickup, GMC S15 Jimmy/Pickup 1995–2004,
Oldsmobile Bravada 1996–2001, GMC Envoy 1998–2000, Isuzu Hombre 1998–2000

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:

Silicone spray lubricant
Trim panel removal tool
Pick
Saddle cup assembly, tape, or wedge to hold window in place
Flat-blade screwdriver or plastic pry tool
10mm socket or driver
Phillips screwdriver
Grease pencil or marker
3/8” drill and 3/8” drill bit
Qty. 3 of 1/4” x 20 x 1 1/2” bolts, qty. 6 of 1/4” washers, and qty. 3 of 1/4” x 20 nuts
Interior body fasteners (Dorman part # 702-013)

PLEASE WEAR SAFETY GLASSES!

Removal Instructions

STEP 1: Using a Phillips head screwdriver, remove the interior door handle bezel retaining screw.
STEP 2: Using a trim panel removal tool or a small fl at-blade screwdriver, remove the interior door trim panel retainer.
STEP 3: Using a trim panel removal tool, remove the power switch assembly.
STEP 4: Disconnect the power switch assembly. $Dorman-742-142-Power-Window-Motor- $5$$
STEP 5: Using a trim panel removal tool, release the interior door trim panel retainers. NOTE: The interior door trim panels are roughly 11 inches away from each other.
STEP 6: Remove the water vapor barrier.
STEP 7: Temporarily install the power switch assembly to lower the door glass to the halfway position, exposing the hardware attaching the door glass to the window regulator.
STEP 7a: Once the door glass has been disconnected from the window regulator, manually slide the door glass into the closed position and hold in place with either a saddle cup assembly, painters tape, or a wedge. NOTE: It may be easier to remove the door glass out of the vehicle. To remove the door glass, you will need to remove the glass weather stripping from the door.
STEP 8: Disconnect the window lift motor connector.
STEP 9: Using a 3/8” drill and 3/8” drill bit, remove the four (4) rivet heads attaching the window regulator to the door.
CAUTION: ONLY DRILL THE RIVET HEADS. IF YOU DRILL COMPLETELY THROUGH THE WINDOW REGULATOR, YOU WILL DAMAGE YOUR DOOR.
STEP 10: Once you have removed the rivet heads, remove the window regulator.=
STEP 11: Using a 3/8” drill and 3/8” drill bit, remove the three (3) rivet heads attaching the window lift motor to the window regulator. NOTE: You only need to remove the rivet heads enough to remove the window lift motor from the window regulator.

Installation Instructions

STEP 1: Attach the window lift motor to the window regulator. NOTE: You will need to use three (3) 1/4” x 1 1/2” x 20 bolts with 3 1/4” washers and nuts.
STEP 1a: Using Dorman Kit # 702-013, use the four (4) supplied nuts and bolts to attach the window regulator assembly to the door.
STEP 2: Connect the window lift motor
STEP 3: Manually slide the door glass down into position, to align the points mounting
the door glass to the window regulator. NOTE: It may be necessary to temporarily attach
the power switch to raise or lower the window regulator, to align the points attaching the door glass to the window regulator.
STEP 3a: Attach the door glass to the window regulator.
STEP 4: Install the water vapor barrier.
STEP 5: Attach the interior door trim panel to the door.
NOTE: Be sure to align the interior door trim panel retainers to their corresponding mounting holes. Failure to do so will result in damage to the interior door trim panel retainers. Verify that the power switch wiring is pulled through the interior door trim panel. No reproductions in whole or in part without prior written approval.
Remove the water vapor barrier.
STEP 7a: Once the door glass has been disconnected from the window regulator, manually slide the door glass into the closed position and hold in place with either a saddle cup assembly, painters tape, or a wedge. NOTE: It may be easier to remove the door glass out of the vehicle. To remove the door glass, you will need to remove the glass weather stripping from the door.
STEP 8: Disconnect the window lift motor connector.
STEP 9: Verify that the window regulator is operating properly and that all of the interior door trim panel retainers and screws are fastened and secured.

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 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.

©2012 Dorman Products, Inc.
No reproductions in whole or in part without prior written approval.