manual or visit a GM dealer to determine the source of the malfunction(s) that cause(d) any DTC codes to. B&M's 4L60E Shift Improver Kit was designed to provide firm positive shift quality and improve. This kit also includes # 7-CS 3-4 clutch piston return spring kit for the input drum which reduces centrifugal 3-4 clutch apply and failure in 1 st gear at 5500 RPM or higher, transmission removal required. The B&M 4L60E Shift Improver Kit mechanically recalibrates your transmission to produce firm positive shifts, this helps. 2007 and later models equipped with the input speed sensor require transmission removal. This kit can be installed while the transmission is in the vehicle on 1993-2006 models only without the input speed sensor. SK® 4L60E Series L What is a good Shift More than everything else, your customer will judge your work quality by the feel of the shift, and no trouble light or codes.
#4L60E SHIFT KIT PDF FULL#
Lastly, on 1993 to 2008, the gear command feature will allow for full gear lever controlled downshifts 3 rd through 1 st gear as well as holding manual 1 st or 2 nd gear to any speed or RPM. Furthermore, the included drop-in USA-made TCC isolator and regulator valve features longer lands which restores the hydraulic integrity of the circuit by utilizing previously unused and therefore unworn areas of their bore. These changes work in concert with an aggressive line pressure curve to greatly improve the overall durability and shift feel of the transmission. It includes components as well as modifications that recalibrates the entire accumulation system, clutch and band feed orifices. This TransGo Reprogramming Kit includes valve body, servo, pump and accumulator components and modifications designed to deliver increased durability while providing firm shifts as well as a more efficient TCC apply. The 3-4 clutch plate failure as well as the 2-3 flare up complaints are caused by an inconsistent pressure boost and poor overall calibration of the shift accumulation system. The TCC slip code leads to the harsh 1-2 upshift as the ECM recognized the TCC slip and commands high line pressure to avoid further TCC slippage and damage. The torque converter clutch regulator valve bore is very prone to wear causing the TCC slip complaints and related code.
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 as well as inconsistent pressure boost problems. This 4L60E-HD2 Reprogramming Kit fits 1993 to 2015 General Motors vehicles equipped with the 4L60E, 4L65E and 4L70E automatic transmission.
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