Dorman 742-448 Window Motor - Front Left

Dorman 742-448 Window Lift Motor

Restore front left window operation with this Dorman window motor for select Chevrolet Colorado, GMC Canyon, and Isuzu applications. Part number 742-448 is precision-engineered to match the fit and performance of the original motor in specific vehicle years, makes, and models.

• Direct replacement window lift motor for the front left door
• Includes the window lift gear
• Hardwired/plug-in electrical connection style
• Designed for select Chevrolet Colorado and GMC Canyon models
• Also listed for select Isuzu i-280, i-290, i-350, and i-370 applications

Detailed Product Overview

This Dorman 742-448 power window lift motor is built for vehicles where the original motor has worn out or stopped responding. It is made to match the original fit and operating characteristics for specific applications, helping restore normal window movement in the front left position. The included window lift gear supports proper engagement with the regulator assembly.

Compatible With 2004-2012 Chevrolet Colorado, front left; 2004-2012 GMC Canyon, front left; 2006 Isuzu i-280, front left; 2006 Isuzu i-350, front left; 2007-2008 Isuzu i-290, front left; and 2007-2008 Isuzu i-370, front left. This part cross-references ACI 82274 for the same application.

Common Problems This Part Can Help Solve

• Front left window will not move up or down
• Slow, weak, or intermittent window operation
• Motor noise without glass movement
• Window stops partway through travel
• Failure caused by a worn original lift motor

Installation Notes and Tips

Mounting hardware is not included, and the wiring harness is not included. Verify the vehicle year, make, model, and front left position before installation. Inspect the regulator, switches, and electrical connectors for wear or damage before replacing the motor so the repair addresses the full cause of the failure.

Quality Assurance

Dorman designs this replacement motor to match original equipment fit and performance for the listed applications. Part number 742-448 is intended for direct replacement use on the specified Chevrolet Colorado, GMC Canyon, and Isuzu front left window applications.