Sonnax 77754-04K TCC Regulator Valve & Isolator Sleeve Kit , 4L60E 4L65E 4L70E

Brand: Sonnax Other Part Number: S74741QAK, 77754-04K Additional Tooling: F-77754-TL4, F-77754-SERV, 77754-R2, 77754-SERV, 7 Interchange Part Number: S74741QAK, 77754-04K Manufacturer Warranty: Yes Items Included: TCC Isolator Valve Kit Manufacturer Part Number: S74741QAK, 77754-04K Superseded Part Number: S74741QAK, 77754-04K Universal Fitment: Yes Vintage Part: No Performance Part: No  4L60-E, 4L65-E, 4L70-E TCC Regulator & Isolator Valve KitPart No. 77754-04K Any application, including '98-later EC3 units REAMER TOOL REQUIRED!!! Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. This is a primary cause for TCC-related slip code P1870 and overheated converters. Exhausting apply pressure also diminishes line pressure, which can result in burnt clutches. Excess wear at the isolator valve bore reduces TCC apply pressure. Reconditioning the bore and installing Sonnax TCC regulator and isolator va