Shift timing lives in the valve body, and worn bores put that timing out of range.

4L80E line pressure booster kit. The unit is built to the calibration the controller expects.

Pressure at the port and pressure at the clutch are not the same measurement. Shipping weight is 0.65 lb.

The parts list below is exactly what ships. Compare it against your teardown before ordering.

REMCO has supplied automatic transmission parts since 1991, and every order ships with its part listing so the receiving technician can check what arrived against what was ordered.

• Valve Body Kit for 4L80E - replacement component designed for proper fit and function
• Designed to support proper hydraulic routing, shift feel and pressure control during valve body service
• Package Includes: one valve body kit as described, supplied loose for valve body service
• Valves, springs and separator components sized to the stock bores - designed for dependable service in the intended application. Ships at 0.65 lb, 7.5x7.5x3 in
• Intended for builders correcting shift complaints. Lay the parts out in order, keep the check balls seated and torque the bolts in sequence

What's in the box

• 1 x 4L80E Line Pressure Booster Kit

Compatible vehicles

• Fits Silverado 2500 [99-04], Sierra 2500 [99-04], Silverado 2500 HD [01-07], Sierra 2500 HD [01-07], Silverado 3500 [01-07], Sierra 3500 [01-07], Silverado 1500 HD [01-07], Sierra 1500 HD [01-07], Suburban 2500 [00-07], Yukon XL 2500 [00-07], Yukon XL 1500 [01-03], Suburban 1500 [01-03], Avalanche 2500 [02-06], Express 2500 [96-09], Express 3500 [96-09], Savana 2500 [96-09], Savana 3500 [96-09], C1500 Suburban [93-99], C2500 Suburban [93-99], K1500 Suburban [93-99], K2500 Suburban [93-99], Yukon [93-01], H1 [92-06].