Seller notes

4L60, 4L60-E, 4L65-E, 4L70-EServo Release Check Valve KitPart No. 77701-0762nd Gear Servo ReleaseTechnicians 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 (TH700-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 rel...

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