Raise and lower the rear left window glass with the Dorman power window motor and regulator assembly, part number 741-578, a Dorman OE FIX design that adds cable tension springs to resist cable reel binding. It fits many Chevrolet, GMC and Cadillac trucks and SUVs as a direct-fit replacement for the listed applications, among them the 2001-2006 Chevrolet Silverado 1500, 2001-2006 GMC Sierra 1500 and 2001-2004 Chevrolet Silverado 2500. See the Buyer's Guide tab for the full list of vehicles.
The original equipment window regulator can fail when its cable binds from poor tension. This replacement uses cable tension springs to address that weak point, and the motor comes with the regulator, so you do not need to source a separate Dorman window motor.
Position: rear left.
Signs the regulator or motor may need replacing include a window that moves slowly, stalls partway, grinds or clicks, or drops into the door. A switch, fuse or wiring fault can cause similar symptoms, so diagnose the cause first. If the regulator or motor has failed, this assembly replaces both at once.
Interchange: 82-178BR · 21-0251
82178BR · 210251 · APWR0096 · 11A507 · 381296 · 82212 · RPAGM029 · 82178b · WLR5001 · WPR0531LMB · 15077722 · 15135970 · 19301981 · 88937199 · SK741578 · WL41578
This part cross-references / interchanges with the following part numbers:
Will this replace the 2001-2006 Chevy Silverado 1500 window motor in the rear left position?
Yes. It is listed as a rear left assembly for the 2001-2006 Chevrolet Silverado 1500. Check the Buyer's Guide tab to confirm your exact vehicle.
Which other trucks does it fit?
It also fits the 2001-2006 GMC Sierra 1500 and the 2001-2004 Chevrolet Silverado 2500, along with many other listed vehicles. The Buyer's Guide tab shows the full fitment.
Why does this Dorman window regulator use cable tension springs?
The original regulator can fail when its cable binds from poor tension. The cable tension springs in this OE FIX design are there to resist cable reel binding caused by insufficient tension.
Do I need special tools to install it?
No special tools are required to install this regulator assembly. Follow your vehicle's service information for removing the door panel and completing the installation.
What are signs the rear window regulator or motor may be failing?
Common signs include a window that moves slowly, stops partway, grinds or clicks, or drops into the door. Check the switch, fuse and wiring first, since they can cause similar symptoms.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
