![]() Finally, this servo is ideal for high-performance applications and is fully compatible with our entire line of SHIFT KIT® Valve Body Repair Kit and Reprogramming Kits™. Sun Shell- A broken sun shell will cause the 4L60E to lose reverse. ![]() Booster Valve- A bad booster valve can leave you without reverse in a hurry. This valve body comes with a preinstalled Sonnax TCC Regulator Valve for eliminating the P1870 Code Free shipping on this high performance (2009-UP) 4L60E transmission valve body installation kit that is a drop in ready solution to your P1870 trouble code problems. If the valve body ends up warped, or if the gasket fails, it’s entirely possible that the gear won’t engage. Remanufactured OEM Valve Body (Casting Number 4237981) Year Range 2009 and UP. Furthermore, the differential area between the band apply area and the release side of the servo piston alters the 3-4 clutch accumulation rate making the 2-3 shift firmer. Valve Body Issues- A bad valve body can make the reverse gear not work in the 4L60E. Remedy your 4l60e’s lazy shifting with a corvette or billet servo. Consequently, this servo provides a shorter, firmer 1-2 shift and with an increased apply area, provides the 2-4 band greater torque capacity in second gear only. The TransGo 7-2P servo has the largest 2 nd apply surface area of all the original equipment servos. You should be able to push the servo cover in slightly by applying firm pressure. Install the blue o ring on the servo cover, then carefully push the servo cover back into the bore and secure the assembly with the stock snap ring. The Corvette-type piston was primarily found in the tuned, port-injected Corvette as well as the high performance Camaro and Firebird. the piston into the servo cover as shown. Review internal and external 4l60e wire harness wiring diagrams for your swap or repair needs. From the factory, the 700R4 and 4L60E transmissions were equipped with 4 different servo sizes based on application. THIS IS THE MOST COMPLETE OEM WORKSHOP REPAIR MANUAL FOR GM HYDRAMATIC 4L60 4L60E TRANSMISSION. The TransGo 7-2P Corvette servo piston assembly fits 1982 to 2015 General Motors vehicles equipped with 700R4, 4L60/E, 4L65E and 4L70E automatic transmissions.
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