4L60, 4L60-E, 4L65-E, 4L70-E Sonnax Servo Release Check Valve Kit Automatic
Specifications
| Return Shipping Will Be Paid By | Seller |
| Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 30 Days |
| Brand | Sonnax |
| Other Part Number | S74480C |
| Interchange Part Number | S74480C |
| Manufacturer Warranty | Yes |
| OE/OEM Part Number | S74480C |
| Manufacturer Part Number | 77701-076 |
| Surface Finish | NEW |
| Country/Region Of Manufacture | United States |
| Placement On Vehicle | Front |
Hello, If you need assistance finding a part please supply the VIN number of your NORTH AMERICAN vehicle AND the part number you are looking for. Symptoms: 2-3 Shift feel poor3-2 Bind-upReduced 3-4 clutch life Cause: Inadequate metering of the 2nd band servo release oil. Correction: This part combines an orifice with a ball check valve to meter servo release oil. 4L60, 4L60-E, 4L65-E, 4L70-E Servo Release Check Valve KitPart No.77701-076 PrevNext 4L60, 4L60-E, 4L65-E, 4L70-E Servo Release Check Valve KitPart No. 77701-076 Valve O-Ring 2nd Gear Servo Release Complaint:2-3 Shift feel poor3-2 Bind-upReduced 3-4 clutch life Cause: Inadequate metering of the 2nd band servo release oil. Correction: This part combines an orifice with a ball check valve to meter servo release oil. 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.Improved design meters servo release oil, reducing 3-4 clutch failureProvides sufficient exhaust so that 3-2 downshifts are smoothCalibrates 3-4 clutch feed orifice without creating shift concerns WARNING: Must be used with properly functioning OE capsule. Servo Release Check Valve; Must Use With D74480D or Original OE Capsule, Extends 3-4 Clutch Life and Improves 2-3 Shift FeelSpecificationsTransmissionsNameYears4L60-E1993 - 2014THM700-R41981 - 1992THM700-R4/4L60/MD81980 - 19944L65-E2001 - 20074L70-E2006 - 20094L60-E-HD2002 - 2006 ._Thank you for looking!