GM 8L45 and 8L90 units 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. Installing Sonnax drop-in converter feed limit valve kit 154740-19K will restore proper valve function, resulting in proper TCC apply and release, regaining control of lube and cooling.

Hardcoat anodized aluminum valve combats premature wear
Annular groove helps center the valve in sleeve
Sleeve adds valve support to resist wear
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

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