Continental WL41578 Power Window Motor and Regulator Assembly - Rear Left

Reliable Rear Left Window Motor and Regulator Assembly

The Continental WL41578 window motor and regulator assembly is designed specifically for rear left door applications on select Cadillac, Chevrolet, and GMC models. This electric assembly provides a durable and precise solution for restoring power window functionality.

• Material: Metal construction for durability
• Voltage: 12V electric motor included
• Mounting Position: Rear left door
• Mounting Method: Bolt-in installation
• Regulator included for complete assembly
• Terminal Type: Male blade terminals, 2 terminals total
• Rotation: Reversible motor operation
• Specific fit for select Cadillac, Chevrolet, and GMC trucks and SUVs

Product Details and Specifications

The Continental WL41578 window motor and regulator assembly is engineered with a metal frame and a 12-volt electric motor to ensure reliable operation. It features a bolt-in mounting method for straightforward installation in the rear left door. The assembly includes the regulator mechanism, eliminating the need for separate parts. The motor supports reversible rotation, allowing smooth window movement up and down. Equipped with two male blade terminals, this assembly connects easily to the vehicle’s electrical system. This part is designed for specific fitment, compatible with models such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade EXT, and others within these brands.

Compatible Vehicles and Applications

This window motor and regulator assembly is compatible with a range of GM trucks and SUVs, including:

• Cadillac Escalade ESV and Escalade EXT
• Chevrolet Avalanche 1500 and 2500
• Chevrolet Silverado 1500, 2500, and 3500 series (including Classic and HD variants)
• GMC Sierra 1500, 2500, and 3500 series (including Classic and HD variants)
• Suburban 1500 and 2500
• Yukon XL 1500 and 2500

Common Issues Addressed by This Assembly

• Power window failure in the rear left door
• Window stuck in the up or down position
• Intermittent or slow window movement
• Grinding or unusual noises during window operation
• Broken or worn regulator components

Installation Notes and Tips

The WL41578 assembly mounts using a bolt-in method, requiring removal of the door panel for access. Ensure the vehicle’s battery is disconnected before installation to prevent electrical shorts. The included motor and regulator come pre-assembled, simplifying replacement. Note that mounting hardware is not included, so retain original bolts or source compatible fasteners. Verify terminal connections match the vehicle’s wiring harness for proper electrical fitment.

Quality Assurance and Warranty

Continental manufactures this window motor and regulator assembly to meet OEM specifications for fit and function. The metal construction and included regulator ensure durability and consistent performance. While specific warranty details are not provided here, Continental products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.