Dorman 751-707 Window Motor and Regulator Assembly - Rear Left

Rear Left Window Motor and Regulator Assembly

Dorman 751-707 is a replacement power window motor and regulator assembly for the rear left door on select Hummer H2 models. It is engineered to match the stock regulator’s fit, function, and performance, with a bolt-on attachment design and a regulator included in the assembly.

Compatible With 2003-2009 Hummer H2, rear left. This Dorman 751-707 assembly is built for direct replacement service on the rear left window system and is listed for the same application as several OE-style cross-reference numbers.

• Replacement power window motor and regulator assembly
• Fits 2003-2009 Hummer H2, rear left
• Precision-engineered for stock-style fit and operation
• Bolt attachment type for installation on the specified application
• Plastic gear material
• Regulator included; one regulator and motor assembly per package
• Mounting hardware not included
• Installation instructions not included

Detailed Product Overview

This Dorman window motor and regulator assembly is made for the rear left window on the Hummer H2 and is intended to replace a worn or failed factory unit without changing the original window system layout. The assembly combines the motor and regulator into one service part, which helps restore normal glass movement when the original mechanism is no longer operating correctly. Part number 751-707 is a direct-fit replacement for the listed vehicle years and position.

This part cross-references ACI 382010 for the same application. It also interchanges with 42-186C and 15771355.

Common Problems This Part Can Address

• Rear left window will not move up or down
• Window moves slowly or stops during operation
• Grinding or slipping from a worn regulator gear
• Motor runs but the glass does not respond correctly
• Broken or fatigued regulator components in the door assembly

Installation Notes

Verify the rear left position and model year before installation. This assembly uses a bolt attachment type and does not include mounting hardware or installation instructions, so reuse or source the correct fasteners as needed. Confirm the window glass is properly supported during removal and replacement to avoid damage to the regulator or door components.

Quality Assurance

Dorman states that this replacement assembly is extensively tested and engineered to match the stock regulator’s fit, function, and performance on the specified Hummer H2 applications. Part number 751-707 is built as a direct replacement for the listed rear left window service use.