TYC 660746 Window Motor and Regulator Assembly - Rear Left

Rear Left Window Motor and Regulator Assembly

Restore rear window operation with this TYC window motor and regulator assembly, part number 660746. It is a 12-volt unit with the motor included, built for the rear left position on select Chevrolet Silverado and GMC Sierra trucks, including stationary-type and power-window applications where listed.

Compatible with Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, and Chevrolet Cheyenne applications in the rear left door. The TYC 660746 is a direct-fit replacement for vehicles that use a standard motor with a 2-pin main connector.

• 12-volt window motor and regulator assembly
• Rear left mounting position
• Motor included
• Standard motor type
• 2-pin main connector
• No anti-pinch motor
• No one-touch function

Fitment Details

• Fits 2010-2013 Chevrolet Cheyenne, rear left.
• Fits 2008-2013 Chevrolet Silverado 1500, rear left, stationary type.
• Fits 2011-2013 Chevrolet Silverado 2500 HD, rear left.
• Fits 2011-2013 Chevrolet Silverado 3500 HD, rear left.
• Fits 2008-2013 GMC Sierra 1500, rear left, stationary type.
• Fits 2011-2013 GMC Sierra 2500 HD, rear left.
• Fits 2011-2013 GMC Sierra 3500 HD, rear left.
• Fits 2007-2010 Chevrolet Silverado 2500 HD, rear left, power.
• Fits 2007-2010 Chevrolet Silverado 3500 HD, rear left, power.
• Fits 2007-2010 GMC Sierra 2500 HD, rear left, power.
• Fits 2007-2010 GMC Sierra 3500 HD, rear left, power.
• Fits 2007 Chevrolet Silverado 1500, rear left.
• Fits 2007 GMC Sierra 1500, rear left.

Common Problems This Part Can Address

• Rear window that will not move up or down
• Slow or inconsistent rear glass movement
• Motor noise without window movement
• Failed regulator operation in the rear left door
• Electrical connection issues at the window motor

Installation Notes

Verify the rear left door configuration, connector style, and motor type before installation. This assembly uses a 2-pin main connector and is specified for 12-volt systems. Confirm whether the vehicle is equipped with a stationary-type or power rear window application where noted in the fitment list.

This part cross-references Dorman OE Solutions 741-388 for the same application.

Quality Assurance

TYC part number 660746 is cataloged as a replacement window motor and regulator assembly for the listed Chevrolet Silverado, GMC Sierra, and Chevrolet Cheyenne applications. The included motor and standard configuration support direct replacement selection based on the confirmed fitment data.