SERVO RELEASE CHECK VALVE
Features and Benefits:
Technicians would like to find a way to successfully extend the life of 3-4 clutches and improve the 2-3 shift feel. They have been trying, with limited success, since the GM 4L60 (700-R4) and 4L60-E series transmissions were introduced. Inadequate metering of 2nd-gear band servo release oil causes 3-4 clutch failure. The 3-4 clutch and 2nd-gear band are not properly synchronized.
Sonnax Servo Release Check Valve Kit 77701-076 is a unique solution that combines an orifice with a ball check valve to resolve these problems.
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