Dorman 742-128 Power Window Motor - Front Left, Front Right or Rear Left

Dorman 742-128 Window Motor for Select GM Vehicles

The Dorman 742-128 window motor is a direct replacement for specific Buick, Pontiac, and Oldsmobile applications that need dependable power window operation. It is precision-engineered to match the fit and performance of the original motor, making it a practical choice when the factory unit is worn out.

Key Features

• Direct replacement window lift motor for select vehicle years, makes, and models
• Plug-in design for straightforward electrical connection
• Window lift gear included for proper motor-to-regulator engagement
• Built to match original fit and performance requirements
• Package contents: window lift motor
• Cross-references ACI 82984 and Cardone New 82-1010 for the same application

Detailed Description

This Dorman window motor, part number 742-128, is made for drivers dealing with slow, intermittent, or non-functioning power windows. It is engineered as an OE-style replacement for select Buick LeSabre, Pontiac Bonneville, Pontiac Grand Am, Oldsmobile Alero, and Oldsmobile Aurora applications, including front right, rear left, and front left positions depending on the vehicle. The plug-in connection helps simplify electrical hookup, while the included window lift gear supports proper operation with the existing regulator assembly.

Compatible vehicle coverage includes Fits 2000-2005 Buick LeSabre, front right; Fits 2000-2005 Buick LeSabre, rear left; Fits 2000-2005 Pontiac Bonneville, front right; Fits 2000-2005 Pontiac Bonneville, rear left; Fits 1999-2005 Pontiac Grand Am, front left; Fits 1999-2004 Oldsmobile Alero, front left; Fits 2001-2003 Oldsmobile Aurora, front right; and Fits 2001-2003 Oldsmobile Aurora, rear left. If you are searching for a replacement window motor for a 2000-2005 Buick LeSabre or a 1999-2005 Pontiac Grand Am, this part number 742-128 is built for those specific applications.

Common Problems This Part Can Address

• Window glass that will not move up or down
• Slow or weak power window operation
• Intermittent window movement caused by motor wear
• Noise from a failing window lift motor
• Loss of power window function in the front left, front right, or rear left position

Installation Notes and Tips

This replacement is for applications that use a plug-in motor connection and do not require a regulator or mounting hardware from the package. Verify the original motor style, connector type, and vehicle position before installation. Because fitment varies by year, make, model, and door location, confirm the application against the vehicle listing before ordering. For best results, inspect the regulator and window tracks for binding or damage before installing the new motor.

Quality Assurance

Dorman designs this window lift motor to match original fit and performance expectations for the listed applications. The part is intended as a reliable replacement for worn factory window motors in the covered Buick, Pontiac, and Oldsmobile models.