Solenoid failure is a common problem

Are you experiencing hard shifts, soft shifts, no shifts or different shifting conditions from when your transmission is cold to hot? The solenoids are prone to failures that will give you these symptoms and they are only rated for 100K miles. ***Please note that the solenoids control the valves in the valve body. If you have a bad valve new solenoids will not fix it. From our experience, 99% of the time, the solenoids are bad not the valves in the valve body. Make sure you get the correct fluid to complete your project. Our professional techs recommend replacing all of the solenoids, filter, gasket and new fluid. Do it once and be done for another 100K miles!

**It is recommended to replace the Transmission Oil Cooler when replacing the solenoids or valve body. Debris builds up in the coolers over the years. If the cooler is not replaced, all of the debris injects into the valve body causing more problems than what you started with**