Dorman 751-139 Window Motor and Regulator Assembly - Rear Right

Dorman 751-139 Rear Right Window Motor

This Dorman power window motor and regulator assembly is a direct-fit replacement for the rear right window on select Chevrolet and GMC trucks. Built for specific vehicle applications, it is engineered to match stock fit, function, and performance for dependable window operation.

• Fits 2019-2024 Chevrolet Cheyenne, rear right
• Fits 2019-2024 Chevrolet Silverado 1500, rear right
• Fits 2019-2024 GMC Sierra, rear right
• Fits 2019-2024 GMC Sierra 1500, rear right
• Fits 2022 Chevrolet Cheyenne Nueva, rear right
• Fits 2022 Chevrolet Silverado 1500 LTD, rear right
• Fits 2022 Chevrolet Silverado 1500 Nueva, rear right
• Fits 2022 GMC Sierra 1500 Limited, rear right
• Fits 2022 GMC Sierra Nueva, rear right

Key Features

• Part number 751-139 for rear right window service
• Specific fit for select Chevrolet Silverado 1500 and GMC Sierra applications
• Motor and regulator assembly with regulator included
• 12-volt, plug-in design with blade-style terminals
• Bolt-on mounting with 4 mounting holes
• Standard replacement grade for OE-style service
• Plastic housing with metal and plastic construction
• Automatic down operation

Detailed Description

Dorman 751-139 is a replacement power window motor and regulator assembly for the rear right door on select Chevrolet Silverado 1500, GMC Sierra, and related model-year applications. It is precision-engineered and tested to align with the original window regulator’s fit, function, and performance, making it a practical choice for restoring rear passenger window movement. The assembly uses a 12 V motor rated at 30 W, a plug-in electrical connection, and bolt-on attachment for a specific-fit installation. This part cross-references OE numbers 84387124 and 84557412 for the same application.

Common Problems It Can Help Address

• Rear window will not move up or down
• Window moves slowly or stops partway
• Grinding, binding, or uneven window travel
• Motor runs but the glass does not respond
• Intermittent rear right window operation

Installation Notes and Tips

Verify the vehicle’s rear right door application before ordering, especially on 2022 Silverado 1500 LTD, Silverado 1500 Nueva, Sierra 1500 Limited, and Sierra Nueva models. Confirm the connector style, mounting points, and automatic-down configuration match the original unit. This assembly uses a bolt-on mounting method and does not include mounting hardware.

Quality Assurance

Dorman designs this replacement assembly to match the original equipment window regulator’s fit and function for the listed Chevrolet and GMC applications. The part is extensively tested for application-specific performance and is intended as a standard replacement for the factory unit.