• 2-3 Late
  • 2-3 Oversensitive
  • Build up of release pressure during lockup
  • Converter bushing failure
  • Delayed engagement
  • Lockup shudder
  • Low cooler flow
  • Lube failures
  • Overheated converter
  • Poor cooler charge at idle
  • Poor Forward & Reverse engagement
  • Poor kickdown
  • Poor line pressure control
  • PR valve buzz
  • Reverse slip
  • Shift timing concerns
  • Soft TCC apply


Loss of oil pressure due to worn components in critical oil circuits and/or lube related failure.


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.

46RE, 46RH, 47RE, 47RH

The Sure Cure® Kit
Part No. SC-46-47RHE-OS

View Instructions Find a Distributor

Sonnax Sure Cure kit SC-46-47RHE-OS targets the root cause of multiple concerns by sealing critical circuit pressure losses in the valve body. The kit contains uniquely-designed parts to prevent the loss of pressures within the main line, converter clutch, throttle and lube circuits. Many of the valve components for the valve body are oversized to address significant wear from many miles, which requires appropriate tool kits for installation. The kit also contains updated transmission components to address unit end play, 2-3 shift complaints, direct clutch failure, kickdown band strut breakage, reverse complaints and other chronic issues.

The Sure Cure Kit quick guide provides clear and easy instructions to get the unit sealed up and back on the road quickly.

  • Restores OE shift quality
  • Repairs biggest trouble areas to reduce comebacks
  • Get everything you need for restoring troublesome units in one place, at one cost
  • Turbine Shaft Seals (2)
  • Front Servo Piston Cover Kit
  • Kickdown Band Strut
  • Lube Regulated Pressure Regulator Valve
  • 4-Spool Switch Valve
  • Manual Valve
  • 3-4 Accumulator Spring
  • Throttle Valve Kit
  • 3-4 Accumulator Piston Seals
  • Boost Valve Spring Retainer
  • Checkballs (10)
  • Intermediate Shaft Pilot & End Plug Kit
  • Output Pilot Bushing
  • Rear Planet End Play Shims (2)
  • Reverse Servo Piston Plug Kit
  • E-Ring
  • Detent Ball & Sleeve Kit
  • Line Pressure Plug & Sleeve Kit

  • 46RE, 46RH, 47RE, 47RH The Sure Cure® Kit SC-46-47RHE-OS
Sonnax Sure Cure Kit

The Sure Cure®

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