4T60E Transmission TCC Regulator & Isolator Valve Kit Sonnax 84754-01K 1993 Up

Description

4T60E Transmission TCC Regulator & Isolator Valve Kit Sonnax 84754-01K 1993 Up
Common complaints with a 4T60-E '93-later are falling out of lockup hot, codes 038, 740 and 1870, adverse lockup in cold weather, torque converter shudder and burn-up of the TCC lining. These complaints can be caused by a worn TCC regulator sleeve and/or a worn valve body bore in the isolator valve area. The TCC regulator sleeve design was changed in '93, and this newer design has an aluminum sleeve with a steel valve that continuously oscillates within the sleeve. This motion eventually wears the inner diameter of the sleeve and results in excessive leakage. This leakage allows the TCC apply oil to exhaust to the sump. Leakage also is caused by the hardened steel isolator valve wearing the aluminum valve body bore. This allows converter oil charge reduction and PWM boost oil loss. Install Sonnax TCC regulator and isolator valve kit 84754-01K to resolve these problems.
In some units, wear of the isolator valve bore may be severe enough to require reaming and installing an isolator valve sleeve. The Sonnax isolator valve sleeve 84754-06 is designed to work only with the isolator valve included in 84754-01K. The new sleeve will restore proper function to the isolator valve circuit. Sonnax tool kit 84754-TL6 provides the necessary tooling to refinish the isolator valve bore in '93-later 4T60-E units.
TCC regulator sleeve is made from highly wear-resistant aluminum specifically designed to prevent excessive wear
Closely toleranced TCC valve is made from hard-coat anodized aluminum to prevent wear and restore hydraulic integrity
Isolator valve is longer than OE in order to contact the entire length of the valve bore
Larger spool diameter and feed orifice have been added to the isolator valveto allow PWM oil to increase TCC oil boost
Isolator valve sleeve salvages valve bodies with excessively worn isolator valve bores which are not corrected by the use of 84754-01K alone
Contents
TCC Regulator Valve
TCC Regulator Sleeve
Isolator Valve
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This item is packaged for Professional Transmission Shops. It may also be packaged in transmission fluid as part of the manufacturing and distribution process and in no way means the item to have been used. We do not stock or sell used electrical parts.
WARRANTY
requests need to be accompanied with the appropriate code
s diagnosed by a professional transmission shop.
Vehicles must be professionally diagnosed for solenoid failure prior to purchase.
We cannot guarantee any one item will fix all transmission problems.
Solenoid failure is often accompanied by additional failures
for example valve body failures, internal wear or damaged hard parts.
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