WAI WPR5640RMB Window Motor and Regulator Assembly - Rear Right

Rear Right Window Motor and Regulator Assembly

The WAI WPR5640RMB is a rear right power window regulator and motor assembly for select Buick LaCrosse models. It is built for direct replacement service on the rear passenger-side window system, helping restore normal glass movement and motor operation.

Key Features

• Part number WPR5640RMB
• Window motor and regulator assembly for the rear right position
• Fits 2005-2009 Buick LaCrosse, rear right
• Power window regulator and motor assembly application
• OE-style replacement for the original rear passenger-side unit

Detailed Description

This WAI window motor and regulator assembly is specified for the rear right door on 2005-2009 Buick LaCrosse vehicles. Use WPR5640RMB when replacing a failed rear passenger-side window regulator or motor assembly on a Buick LaCrosse, and verify the rear right application before installation. The WPR5640RMB is a direct-fit service part for restoring window travel in the rear passenger door.

Common Repair Symptoms

• Rear window will not move up or down
• Window motor runs but the glass does not travel correctly
• Slow, uneven, or noisy rear passenger-side window operation
• Broken regulator components inside the door
• Intermittent rear right power window function

Installation Notes and Tips

Confirm the vehicle is a 2005-2009 Buick LaCrosse with the rear right power window application before ordering. Compare the original unit, connector style, and mounting points during replacement. Door trim removal and careful glass support are typically required for this repair.

Quality Assurance

WAI supplies electrical and window system replacement parts for automotive service applications. Part number WPR5640RMB is intended for the listed Buick LaCrosse fitment and should be matched to the vehicle’s rear right window assembly before installation.