500” boost valve (both furnished) provide an aggressive line pressure curve and regulation without the need for a TCM. Similarly, the internal vacuum modulator setup and the. It’s all about providing the required gears when there are no computer controls. This kit delivers short firm shifts for performance as well as greater overall durability, it is designed for the off-road driver only and for vehicles that do not have any TCM controls. This TransGo Reprogramming Kit provides full manual control for upshifting and downshifting 1 st through 4 th gear, there are no automatic shift functions retained. 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-3 Reprogramming Kit fits 1993 to 2008 General Motors vehicles equipped with the 4L60E, 4L65E and 4L70E automatic transmission. Manual Shift Control or Gear Command™ option
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