Sonnax 154740-22K Features:

GM 8L45 and 8L90 transmissions may have TCC apply and release problems. Bore wear or a stuck converter feed limit valve can result in converter overheat, incorrect TCC apply or release, inadequate lube and cooling, and converter over-pressurization. Reaming the bore and installing the Sonnax oversized converter feed limit valve kit 154740-22K will restore proper valve function, resulting in proper TCC apply and release, regaining control of lube and cooling.