However, due to the fact that one misplaced shift valve or spring can result in a malfunctioning or damaged transmission, it’s highly recommended that you allow the experts at Mister Transmission to perform the installation of a shift kit for you. We carry a variety of shift kits for most makes and models and would be more than happy to answer any questions you have. Plus, the fact that shift kits can be installed in a few hours without removing the transmission from the vehicle makes them a logical upgrade. Most vehicle owners are willing to live with the faster shift patterns in exchange for the extended durability and added fuel economy. By better utilizing the energy normally turned into heat by slipping during extended overlap, shift kits allow you to instead use that inertial energy for forward motion with quicker shifts, therefore you’re also able to notice improved city fuel economy. Transmission shift kits can reduce this overlap time while improving the overall shifting action. The added friction also creates excessive heat, which prematurely wears out seals and clutches. While the extended shift overlap creates a very smooth shift, it also reduces the efficiency and durability of the transmission by making the friction surfaces work overtime. It’s this overly smooth, disconnected feeling that earned early automatic transmissions the label “slush box.” This is desirable because the automobile manufacturer’s engineers sometimes allow far too much shift overlap (when the transmission is actually in two gears at once) in an effort to increase shift smoothness. In short, an automatic transmission shift kit modifies the transmission’s shift timing in order to dramatically increase shift firmness and durability of the transmission components. Many people know the words, but not many fully understand what a shift kit truly does or why it’s desired.
Transgo 4l60e shift kit install install#
Finally, the difference in driving characteristics once the kit is installed is remarkable.To accomplish these benefits we would install what is known as an automatic transmission shift kit, which is probably one of the most misunderstood upgrades in the automotive world. The kit also provides TCC regulator valve component options that will work with vehicles with or without active fuel management (AFM). 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 a slight increase in line pressure to greatly improve the overall durability and shift feel of the transmissions. It includes components as well as modifications that recalibrates the entire accumulation system. The kit includes valve body, servo, pump and accumulator components and modifications designed to deliver increased durability while providing short smooth 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.
Transgo 4l60e shift kit install code#
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. I viewed the Transgo HD-2 video, which seem easy to follow. Here we previously discussed the difficulty of installing the SK kit. This because I don't want to appriciably alter the shift characteristics, since it's a family DD and has 197000 mi. 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. I just received my Transgo 'SK-4L60E' kit, which I chose, over the HD-2 KIt. 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. Shift Kit For 4L60E, 4L65E, 4L70E, 4L75E Transmissions
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