You are buying a tool that is used to air check the driving clutches and 2-4 band in any 4L60E, 4L65E or 4L70E GM transmission.

  • The tool is made of aircraft grade 1/4″ thick aluminum
  • Comes with 12 grade 10.9 flange head bolts for years of trouble free service
  • It will NOT fit the 700-R4 or 4L60 (non electronic) series

It bolts down in place of the valve body and allows the transmission rebuilder to apply air pressure into the transmission once it’s assembled.  This is a good double check and an excellent way to diagnose internal leaks or damaged seals before installing the transmission.

Simply apply air to the holes provided and it will check the following internal components:

  • Forward Clutch
  • Over Run Clutch
  • Reverse Input Clutch
  • 3-4 Clutch
  • 2nd Band Apply
  • 4th Band Apply
  • Reverse Boost valve / sleeve

The low / reverse piston can be easily air checked without the use of this plate.

Instructions and a pictorial that shows hole locations / functions is included.