TransGo SK4L60E Shift Kit® — Valve Body Repair Kit

Product Description

The TransGo 4L60E SHIFT KIT® Valve Body Repair Kit fits 1993 to 2015 General Motors vehicles equipped with the 4L60E, 4L65E, and 4L70E automatic transmission. Common complaints on this transmission are TCC slip or shudder, code P1870 or P0894, harsh 1-2 shift, double-bump shifts, 2-3 flare-up, burnt 3-4 clutch plates, and inconsistent pressure boost problems.

The torque converter clutch regulator valve bore is very prone to wear, causing TCC slip complaints and the related code. The TCC slip code leads to a harsh 1-2 upshift as the ECM recognizes the TCC slip and commands high line pressure to avoid further TCC slippage and damage. The 3-4 clutch plate failure and 2-3 flare-up complaints are caused by inconsistent pressure boost and poor overall calibration of the shift accumulation system.

The kit includes valve body, servo, pump, and accumulator components and modifications designed to deliver increased durability while providing short, smooth shifts and a more efficient TCC apply. It recalibrates the entire accumulation system, working in concert with a slight increase in line pressure to greatly improve overall durability and shift feel. The included drop-in USA-made TCC isolator and regulator valve features longer lands that restore the hydraulic integrity of the circuit by using previously unused, and therefore unworn, areas of the bore. The kit also provides TCC regulator valve component options for vehicles with or without Active Fuel Management (AFM).

Corrects / Prevents / Reduces

• TCC slip or shudder
• Codes P1870 and P0894
• Harsh 1-2 shift
• Double-bump 1-2 or 2-3 shift
• 2-3 flare-up
• Burnt 3-4 clutch plates
• 2-4 band failure
• Pump and valve bore wear due to pump slide bounce

Kit Contents

What Is a Shift Kit®?

TransGo Shift Kit® valve body repair kits are a combination of new and re-engineered components installed primarily in the valve body, and sometimes in the pump or the transmission itself. These kits solve a variety of inherent problems and weaknesses that differ by transmission model, including normal warp and wear, often allowing a higher-mileage transmission to work better than a new one. Typical components include springs, valves, check balls, gaskets, and separator plates. TransGo Shift Kits are designed for durability in normal everyday use and light-duty towing.

Specifications

Vehicle Fitment — 4L60E Family Only