Window Regulator Pair Dorman 741-890, 741-891 - 1AWRK00066

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Part Details

  • Regulator Option:   with Motor
  • Quantity:   Pair
  • Operation:   Power


  • Comes as a Pair
    • Fits both the LH (Driver) and RH (Passenger) REAR DOOR
  • Replaces dealer part numbers: 15142774 & 15142775
  • Assembly includes motor and regulator
  • 100% tested prior to leaving the factory

Note: These regulators are only correct for Extended Wheel base models (129 inches). They will not fit the short wheelbase models (113 inches).

Please Note: These window regulators are high quality aftermarket parts that meets or exceeds the performance of the original. They have been subjected to extensive testing and quality control standards. That is why we offer these regulators with our superior warranty!


  • This repair is easier than you may think. You'll find our installation videos helpful. In our experience removing and replacing the door panel is the most involved step in the repair. On most vehicles this only requires removing a few screws and push-in clips.
  • You'll get a great feeling of accomplishment after you complete this repair knowing you saved money, and you didn't have to give up your car for a day at the repair shop. Your passengers and other drivers will be amazed.

Fit guaranteed

  • 1A Auto will refund you with no hassle if this window regulator does not fit the application stated.
  • This regulator will install just as your original does. Save time and money.


  • Be confident this part will work right. Every regulator is tested after assembly to make sure all mechanisms are working correctly.
  • It is important that your new regulator works for a long period of time. The design of this regulator is tested to withstand 10,000 cycles. That is enough to raise and lower your window 3 times per day for 9 years.


  • Windows that don't work can be frustrating. They can also hurt your vehicles value. An inoperable window could mean $200-$500 discounted off a dealer trade value or asking price.
  • Some shops and dealers charge more for parts and repairs when they think you don't know what is involved. Now you can get the value you deserve. Knowing what this repair entails can be the difference between the value of doing it yourself, or the pain of a costly repair bill.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Removing the Door Panel (0:37)
    • Pry up the door pull trim piece with a flat blade screwdriver
    • Remove the two 7mm bolts from the door pill
    • Pry out the door panel clips with a putty knife
    • Pull the door handle out of the door panel
    • Lift the door panel up and off
    • Push the window switch out of the door panel from behind
    • Disconnect the window switch wiring harness
    • Peel off the water shield, using a razor blade if necessary
  2. step : Removing the Window Regulator (1:58)
    • Lower the window to access the window clamp nuts
    • Disconnect the window motor wiring harness
    • Loosen the two 10mm nuts from the window clamp
    • Pull the window out of its clamp
    • Unclip the regulator cables from the door
    • Remove the lower two 10mm bolts from the regulator
    • Loosen the top ten mm bolt from the regulator
    • Pull the window regulator out of the door
  3. step : Installing the New Window Regulator (3:21)
    • Remove the top 10mm bolt from the old regulator
    • Insert the 10mm bolt into the new regulator
    • Hang the new regulator in place by the bolt
    • Insert the lower two 10mm bolts into the regulator
    • Tighten all three 10mm bolts
    • Clip the regulator cables into the door
    • Loosen the 10mm window clamp nuts
    • Connect the window motor wiring harness
    • Lower the window onto its clamps
    • Tighten the 10mm window clamp nuts
    • Put the ignition in accessory mode
    • Connect the window switch wiring harness
    • Test the window with the switch
    • Disconnect the window switch wiring harness
    • Turn the ignition off
  4. step : Reinstalling the Door Panel (5:02)
    • Put the water shield into place
    • Push the door panel shield onto the door panel
    • Thread the wiring harness through the window switch cavity
    • Lift the door panel into place
    • Push in the door panel clips
    • Connect the window switch wiring harness
    • Push the window switch into the door
    • Insert the two 7mm bolts into the door pull
    • Push in the door pull trim piece

Tools needed for replacement:

    General Tools

  • Putty Knife
  • Razor Blade / Gasket Scraper

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket
  • 7mm Socket

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Year Make Model Description
2002-2006Chevy Trailblazer EXT Chevy Trailblazer EXT Rear Power Window Regulator with Motor Pair Dorman 741-890, 741-891
2002-2006GMC Envoy XL GMC Envoy XL Rear Power Window Regulator with Motor Pair Dorman 741-890, 741-891
2004-2005GMC Envoy XUV GMC Envoy XUV Rear Power Window Regulator with Motor Pair Dorman 741-890, 741-891
2003Isuzu Ascender Isuzu Ascender Rear Power Window Regulator with Motor Pair Dorman 741-890, 741-891
2004-2006Isuzu Ascender Isuzu Ascender 7 Passenger Rear Power Window Regulator with Motor Pair Dorman 741-890, 741-891
Only 2 left in stock
Part #: 1AWRK00066

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Brand #: 741-890, 741-891

How-to Video:

(06:28 min)