Move the front left door glass up and down with this Dorman window regulator, part number 740-644, a power window regulator supplied as the regulator only. It fits many vehicles, among them the 1999-2006 Chevrolet Silverado 1500, 1999-2006 Chevrolet Silverado 2500 and 1999-2006 GMC Sierra 1500. See the "Vehicles it fits" section for the full list.
The regulator is the mechanism inside the door that carries the glass as the power window motor drives it. This Dorman OE Solutions window regulator replaces the worn or broken unit on the listed applications. The window motor is not included.
- Built to match the original: engineered and tested against the fit, function and performance of the factory window regulator on the specified vehicles.
- Quality assured: cycle-tested thousands of times in an actual vehicle door.
- Reliable design: engineered in the USA and backed by Dorman's long experience in the automotive aftermarket.
- Easy installation: reverse-engineered to the original equipment shape and dimensions for a direct fit.
A failed regulator can cause several signs: glass that moves slowly, sits crooked, drops into the door, or will not move while you can hear the motor running. If the regulator is the cause, this unit replaces it. Diagnose the problem first, because a worn motor or switch can cause similar signs.
Interchange: 20-0205
200205 · 81212 · RPGM005 · 82178A · WLR3001 · 15046509 · 19120095 · 19120846 · SK740644
This part cross-references / interchanges with the following part numbers:
81212, RPGM005, 82178A, WLR3001, 15046509, 19120095, 19120846, SK740644, 20-0205
Frequently Asked Questions
Is this the right 1999-2006 Chevy Silverado 1500 window regulator?
It is listed for the front left door of the 1999-2006 Chevrolet Silverado 1500. The "Vehicles it fits" section shows every listed application.
Does it also fit the 1999-2006 GMC Sierra 1500 and 1999-2006 Chevrolet Silverado 2500?
Yes. It is listed for the front left door of the 1999-2006 GMC Sierra 1500 and the 1999-2006 Chevrolet Silverado 2500.
Does this include the power window motor?
No. Dorman lists 740-644 as a power window regulator, regulator only, so the motor is not part of this listing.
What are signs a window regulator may need replacing?
Signs include glass that moves slowly, tilts, drops into the door, or stays put while the motor runs. Diagnose first, since a failing motor or switch can cause similar symptoms.
How was this regulator tested?
Dorman cycle-tested it thousands of times in an actual vehicle door. It is engineered in the USA to the original equipment shape and dimensions.
