Replace a worn-out or damaged factory unit with the Dorman window motor, part number 742-123, a window lift motor that drives the regulator to raise and lower the glass. It fits many vehicles, among them the 1999-2006 Chevrolet Silverado 1500, the 1999-2006 GMC Sierra 1500 and the 1999-2005 Chevrolet Silverado 2500. See the "Vehicles it fits" section for the full list.
This motor is cataloged for the front right, rear right and rear left positions, depending on the application. Factory motors can fail from damage, fatigue or collision impact. When that happens, this Dorman power window motor is built to take over the original unit's job.
- Direct replacement: Built to perform like the original equipment motor on the listed applications.
- Ideal solution: Engineered and tested to help return window operation to original equipment function when the factory motor quits.
- Durable construction: Designed and made to strict specifications for dependable performance.
- Trustworthy quality: Supported by a U.S.-based team of product experts and more than a century of automotive experience.
A window that moves slowly, stops partway, grinds or clicks, or won't move at all may mean the motor needs replacing. A faulty switch, wiring or regulator can cause the same symptoms, so diagnose the cause before replacing the motor.
Interchange: 42-1067 · 82-179 · 42-179 · 22-0006
421067 · 82179 · 42179 · 220006 · 11M33 · 82981 · RMCH001 · WLM2038 · 15095844 · 15101786 · 88937200 · 88981019 · 72981 · WL42032 · WMO1212LR
This part cross-references / interchanges with the following part numbers:
11M33, 82981, RMCH001, 42-1067, 82-179, 42-179, WLM2038, 15095844, 15101786, 88937200, 88981019, 72981, WL42032, 22-0006, WMO1212LR
Frequently Asked Questions
Will this work as a window motor for a 1999-2006 Chevy Silverado 1500?
Yes. It's listed for the 1999-2006 Chevrolet Silverado 1500, along with the 1999-2006 GMC Sierra 1500 and the 1999-2005 Chevrolet Silverado 2500. Check the "Vehicles it fits" section for other vehicles.
Which window positions is part 742-123 cataloged for?
It's cataloged for the front right, rear right and rear left positions, depending on the application.
What does this window motor do?
It powers the window regulator, which raises and lowers the glass when you press the window switch.
What are signs the window motor may need replacing?
Slow movement, a window that stops partway, grinding or clicking, or no movement at all may indicate a failing motor. A bad switch, wiring or regulator can cause the same symptoms, so diagnose first.
Is the Dorman 742-123 a direct replacement for the original motor?
Yes. Dorman designed it to perform like the original equipment motor on the listed vehicles. It is engineered and tested to help return factory window operation when the original fails.
