SonnaxValve Kit

A stuck or worn safety mode valve in GM 5L40-E, 5L50-E can result in the L/R clutch staying applied on a 1-2 upshift, causing a 1-2 bind-up condition. Wear at the 3-4 or 4-5 shift control valves allows signal and apply oil pressure to exhaust, preventing proper valve movement that causes flares, shift complaints and clutch distress. Reconditioning the bore and installing Sonnax oversized 3-4, 4-5 and safety mode valve kit 55211-14K restores the necessary hydraulic clearances required for proper valve function. Oversized valve kit allows elimination of bore wear Hardcoat anodized aluminum valves combat premature wear Annular grooves prevents future side load wear One valve kit can be used in any of three OE locations

Valve Kit; 3-4, 4-5 & Safety Mode Oversized; F-55211-TL14, T-VB-FIX Required