GM / Chevy 4L80E Transmission Pump Assembly – Remanufactured (2004-Up)

GM / Chevy 4L80E Transmission Pump Assembly – Remanufactured (2004-Up)

The GM/Chevy 4L80E remanufactured transmission pump assembly (2004 and up) is a vital component for vehicles equipped with the 4L80E 4-speed automatic transmission. This pump assembly maintains proper hydraulic pressure throughout the transmission, ensuring smooth clutch engagement, precise gear shifts, and consistent torque transfer. Its precision remanufactured construction delivers reliable performance, durability, and long-term efficiency under heavy-duty and everyday driving conditions.

Over time, worn pump gears, reduced hydraulic pressure, or internal leaks can cause slipping, delayed engagement, harsh shifting, or transmission fault codes. Replacing the 4L80E pump assembly restores proper hydraulic function, improves shift quality, and protects internal components, including clutches, planetary gear sets, and bearings. Installing a remanufactured pump during a transmission rebuild ensures reliable operation, extended transmission life, and optimal performance.

This remanufactured 4L80E pump assembly is compatible with all 4L80E transmissions from 2004 and newer. Always verify your vehicle’s transmission code, model year, and engine type before ordering to ensure proper fitment. Correct verification guarantees smooth hydraulic operation, precise engagement, and long-term reliability.

For best results, pair this pump assembly with a complete transmission service, including clutch packs, friction plates, seals, bearings, and filters. Customers can also explore related components on our site, including 4L80E valve bodies, rear planetary assemblies, forward clutch drums, and hard parts, to complete a full transmission rebuild or service.

4L80 Transmission Parts

Vehicle Compatibility

GM / Chevrolet Applications

• Chevrolet Silverado 1500 / 2500 / 3500 (V6 & V8): 2004-Up

• Chevrolet Tahoe / Suburban / Blazer: 2004-Up

• GMC Sierra 1500 / 2500 / Yukon: 2004-Up

• Cadillac Escalade / Hummer H1: 2004-Up

Fitment Notes

This remanufactured 4L80E pump assembly fits 2004 and newer 4L80E transmissions only. Always confirm the transmission code, model year, and engine type before purchase. Proper verification ensures hydraulic efficiency, smooth clutch engagement, and extended transmission life.

Consult official GM service manuals for installation procedures, torque specifications, and assembly guidance.

Manufacturer Part Number: 34500ED

4L80 Transmission Diagram