Symptoms:

  • Low line rise
  • Low Reverse boost
  • Soft shifts
  • Maximum adapt
  • Long shifts
  • Converter shudder
  • Overheated converter
  • Code 741, 1811
  • Falls out of lockup when hot
  • No lockup

Correction:

The parts in this Sure Cure kit repair and restore key areas most prone to TCC-related transmission problems and other issues affecting shift quality.

Warning:

A solid version, 84881, for 4T60 and 4T60E units with the brass orifice plug also is available. The correct style pin must be used or line pressure and pump performance will be adversely affected.

4T65-E

The Sure Cure® Kit
Part No. SC-4T65E

Enclosed pump slide pivot pin does not fit late-style, 3-piece pump.


View Instructions Find a Distributor

Sonnax Sure Cure kit SC-4T65E, fully compatible with all GM 4T65-E units, is a comprehensive reconditioning package featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance. Sure Cure components are the same Sonnax parts sold individually to resolve common valve body complaints as well as other transmission problems. The high-quality Sonnax parts in each Sure Cure kit repair worn areas and protect the transmission against future damage. Plus, each kit comes with an easy-to-read, step-by-step installation guide that covers the inspection and repair of the most critical areas of the valve body

  • Restore shift quality and reduce comebacks
  • Repairs biggest trouble areas to reduce comebacks
  • Includes step-by-step instructions for comprehensive valve/pump body restoration
  • Get everything you need for restoring troublesome units in one place, at one cost
  • Shim Input Clutch Hub .010"
  • Shim Input Clutch Hub .020"
  • Shim Differential Carrier-to-Case
  • Pump Slide Pivot Pin
  • TCC Relief Valve
  • Differential Lube Tube Retainer Kit
  • Boost Valve Kit
  • TCC Apply Valve Kit
  • AFL Valve Kit
  • TCC Regulated Apply Valve Kit
  • Checkballs (2) .375" Dia.
  • Checkballs (8) .250" Dia

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

GM 4T65-E Valve Body Layout

GM 4T65-E Valve Body Layout

  • 4T65-E The Sure Cure® Kit SC-4T65E

Sonnax Sure Cure® Kits

Comprehensive Kit for Big Problems You Don't Want Back

Knowing exactly what parts to replace in troublesome transmissions is an ever-increasing challenge, but Sonnax Sure Cure kits solve this problem for you. Each kit is a comprehensive reconditioning package featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance.

Learn More about Sonnax Sure Cure Kits