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Vehicle Fit

Part Details

  • Regulator Option:   with Motor
  • Operation:   Power


  • LH (Driver Side) REAR DOOR
  • Assembly includes motor and regulator
  • Replaces dealer part numbers: 15169271, 15142774
  • 100% tested prior to leaving the factory

Note: This regulator is only correct for Extended Wheel base models (129 inches). It will not fit the short wheelbase models (113 inches).

Please Note:

This window regulator is a high quality aftermarket part that meets or exceeds the performance of the original. It has been subjected to extensive testing and quality control standards. That is why we offer this regulator with our superior warranty!

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

4.67/ 5.0
3 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Best Price, Quick, & Excellent Video Instructions
This is a great way for anyone with even basic mechanical ability to save lots of money. Excelkent quality, and unlike the dealer, it includes the motor at nearly $100 less total cost. Free shipping that had it herd in about 5 days including the weekend. The video was excellent for how to gain access and to replace the window regulator. Because of that, I tried buying the part from 1AAUTO, and I was pleasantly surprised to find the price the lowest, the shipping free and prpt, and the quality obviously as high as possible. I will look to 1AAUTO for my next need as well. Absolutly impressive!
July 17, 2017
Gmc Envoy
Exactly what I was looking for at a good price. I had a different regulator when processing my order when deliver. I call back gave them my Vin# they send me the correct one. I didnt have to wait long.
August 1, 2017
Works great
Works great and the video was spot on. Free shipping was a little too long. Nothing should take that long to ship anymore. Also to have it shipped sooner was a ridiculous price. Was not going to include this information but you required at least 50 characters on the review. So while looking for something to say I was reminded about the shipping. Thats also what made me take it for my five star you to a four. No one wants to be told the length of review they have to write.
September 15, 2017
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
After replacing rear window regulator the window gets stuck in the up positioning why does the window get stuck with rolled all the way up?
Judy V July 27, 2017
When installing the regulator make sure the support bracket on the window is snug not tight. Let the glass rest on the bracket. Control the window switch to adjust the correct fit. Once you had done this keep the window up or down at your convenience then tight up the brackets. Good Luck have a great day
S U July 28, 2017
I had the same issue so I snugged the door nut and bolts first, then did the window bolts, it worked great!
P A August 28, 2017
Year Make Model Description
2002-2006Chevy Trailblazer EXT Chevy Trailblazer EXT Rear Power Window Regulator with Motor Driver Side Dorman 741-890
2002-2006GMC Envoy XL GMC Envoy XL Rear Power Window Regulator with Motor Driver Side Dorman 741-890
2004-2005GMC Envoy XUV GMC Envoy XUV Rear Power Window Regulator with Motor Driver Side Dorman 741-890
2003Isuzu Ascender Isuzu Ascender Rear Power Window Regulator with Motor Driver Side Dorman 741-890
2004-2006Isuzu Ascender Isuzu Ascender 7 Passenger Rear Power Window Regulator with Motor Driver Side Dorman 741-890
Only 3 left in stock
Part #: 1AWRG00449

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Brand #: 741-890

How-to Video:

(06:28 min)