4L60E 4L65E Transmission TCC Regulator & Isolator Valve Kit Sonnax 77754-03K

img{max-width:100%}  4L60E 4L65E Transmission TCC Regulator & Isolator Valve Kit Sonnax 77754-03KFits '97-earlier Non-EC3 units onlyGM 4L60-E, 4L65-E and 4L70-E unit, severe wear of the TCC regulator valve bore is caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. This is a primary cause for TCC-related slip code P1870 and overheated converters. Exhausting apply pressure also diminishes line pressure, which can result in burnt clutches. Excess wear at the isolator valve bore reduces TCC apply pressure.Reconditioning the bore and installing Sonnax TCC regulator and isolator valve kit 77754-03K restores normal TCC operation by shoring up the hydraulic integrity of this circuit.10% Higher apply pressureIsolator valve lengthened to operate in unworn portions of the boreSleeve manufactured from highly wear-resistant aluminumHardcoat anodized aluminum valves combat premature wearAnnular grooves help center valves in bore to reduce future side-load wearContentsIsolator ValveSpringRegulator ValveRegulator SleeveParts ship daily from our distribution center.FREE SHIPPING on US OrdersIn a Hurry - this item is available for expedited shippingGOT QUESTIONS on your specific Year/Make/Model? Send us a message on eBay. ¿Habla español? Escríbanos con el año, la marca, y el modelo de su vehículo. If you have any problems with your order, please message us immediately to resolve your issue. We have a technician available to assist you.This item is packaged for Wholesale Distribution WARRANTY requests need to be accompanied with the appropriate codeas diagnosed by a professional transmission shop.Vehicles must be professionally diagnosed for solenoid failure prior to purchase.We cannot guarantee any one item will fix all transmission problems.Solenoid failure is often accompanied by additional failures;for example valve body failures, internal wear or damaged hard parts. Visit our eBay Store: Phoenix Transmission PartsFor all of your Automatic Transmission Part needsCheck out my other items!Be sure to add me to your favorites list!