Nu-Relics 1955-1959 Power Window Kit (For trucks with vent windows)-GM Truck 15580-2 Upgrade your classic truck with modern convenience—without sacrificing originality. This Nu-Relics Bolt-On Power Window Kit is specifically engineered for 1955–1959 GMC pickup trucks, delivering smooth, reliable window operation with a true direct-fit design. Designed to utilize factory mounting locations, this kit offers a clean installation with no welding required, while allowing for minor modifications during install. The result is a professional fit and finish with modern functionality built into your classic doors. Nu-Relics is known for industry-leading quality, using precision-built regulators and durable components designed to last. Say goodbye to worn-out manual regulators and enjoy effortless window control every time you hit the road. Perfect for restorations, restomods, or daily drivers—this is one upgrade you’ll notice every time you roll the window down. What’s Included: (2) Model-Specific Power Window Regulators (Driver & Passenger Side) (2) New Delco OEM Power Window Motors – Made in USA Complete Wiring Harness for power window operation Switches* for driver and passenger control*** Wiring Conduit for clean door-to-cab routing Mounting Hardware for installation Detailed Installation Instructions *Switches Choose Between: Chrome Window Switches OR Nu-Cranks Master Switch Option: Installing a master switch allows an original look of the crank handles but the ability of the driver to also control the passenger side window by installing (or hiding) this chrome switch anywhere in the driver's side. The Master Switch Kit includes: a single chrome switch, wiring harness, a single reinforcement, correct terminals and instructions. PLEASE NOTE: ***If you choose the retrofit NuCrank switches, you will use your original or reproduction window crank handle (not included in this kit). ***If you choose the standard chrome switches, you will receive wiring and switches to control driver and passenger side windows from the driver side door, and passenger side only window from the passenger side door. 1955-1959 GMC Truck Power Window Conversion Kit Highlights: Model-Specific Direct Fit – Uses Factory Mounting LocationsDesigned specifically for 1955–1959 GMC trucks to bolt into original mounting holes for a precise installation No Welding Required – Clean Install DesignEngineered for a straightforward install while allowing for minor modifications during the process Uses Stock Window ChannelsRetains original-style channels for proper alignment and smooth glass operation New Delco OEM Motors – Made in USAPremium-grade motors deliver reliable, long-lasting performance you can trust Heavy-Duty 1018 Cold Rolled Steel ConstructionBuilt for strength and durability, ensuring long-term use in both drivers and show trucks Brass Oilite Thrust Bearings at Pivot PointsReduces friction and wear for smoother, quieter window operation over time Cryogenically Treated Gear PlatesHardened gear teeth increase strength and extend the life of the regulator system Complete Kit – Ready to InstallIncludes switches, wiring harness, and conduit for a complete power window conversion Smooth, Reliable Power Window OperationEngineered for consistent, effortless performance compared to worn factory regulators Perfect for Restorations & RestomodsAdds modern convenience while maintaining the integrity of your classic truck build Application / Fitment: Fits the following vehicles: 1955 GMC Pickup Truck 1956 GMC Pickup Truck 1957 GMC Pickup Truck 1958 GMC Pickup Truck 1959 GMC Pickup Truck Fitment Notes: Designed for standard cab pickup doors Compatible with original-style window channels and glass Works with factory door configurations Minor modification (cutting) required during installation No welding required Professional installation recommended for best results
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