Keep the front left door glass moving up and down on its track with this Dorman window regulator, part number 740-520, a power window regulator designed to guide and lift the window. This Cadillac DeVille window regulator is a direct-fit replacement for the front left door of the 2000-2005 Cadillac DeVille.
This Dorman OE Solutions window regulator is sold as the regulator only. The window motor is not included.
- Built to replicate the original: Precision-engineered and extensively tested to reproduce the stock regulator's exact fit, function and performance on the listed vehicle.
- Quality assured: Tested by cycling it thousands of times in an actual vehicle door.
- Reliable design: Engineered in the USA and backed by Dorman's long history in the automotive aftermarket.
- Easy installation: Reverse-engineered from the original equipment shape and dimensions for a direct, seamless fit.
A window regulator may need replacing if the glass moves slowly, sits crooked or drops into the door, or if you hear grinding or clicking from the door when the switch is pressed. A failed motor or switch can cause similar symptoms, so confirm the regulator is the cause before replacing it.
Interchange: 1553-2000L · 82-1003A · 20-0121
15532000L · 821003A · 200121 · WR0026 · 11R299 · 81244 · RPGM079 · WLR6002 · 17801304 · 19244842 · 25714290 · 25737256 · C462942 · SK740520 · WR40520
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
WR0026, 11R299, 81244, RPGM079, 1553-2000L, 82-1003A, 821003A, WLR6002, 17801304, 19244842, 25714290, 25737256, C462942, SK740520, WR40520, 20-0121
Frequently Asked Questions
Is this the right window regulator for an '04 Cadillac DeVille?
Yes. The 740-520 is listed for the front left door of the 2000-2005 Cadillac DeVille, which includes the 2004 model year.
Is the window motor included?
No. The 740-520 is sold as a power window regulator only, and the window motor is not included.
What does a window regulator do?
It is the mechanism inside the door that guides the window glass and moves it up and down when the power window motor drives it.
What are signs a window regulator may be failing?
Common signs are glass that moves slowly, tilts or drops into the door, and grinding or clicking when the switch is pressed. A bad motor or switch can act similarly, so diagnose the cause first.
How was this regulator tested?
Dorman tested it by cycling it thousands of times in an actual vehicle door.
