Not happy at all. I apologize for the grammar. I am not happy. I recently bought a 4L60-E from Monster. Along with a transfer case. Well I'm currently suffering the curse of P1780. I have checked all the components systems, Electrical-physically inspected and tested all circuits to and from the PCM and Transmission. Pulled the pan checked the submersed harness. Used a Snap-on Scanner to verify solenoid operation. And preformed other necessary tests. The fault occurs randomly with no consistent type of pattern. Using Xgauge scan tool to reset indicator light and disable high pressure mode before the violent shifting.
New ATF fluid.
Always have been big on Oil temps, using 2 series lined coolers.

Nothing works. Valve body must be next. Got a beautifully painted blue transmission which from day one has shifted like **** and has leaked fluid all over my brand new driveway. The leak appeared day one. Damn what a dissapointment that was. Almost as worse as the **** assembly I'm relying on every morning. When I pulled the pan the dipstick stop was out of position. Along with the wiring inspection reveling a absent seal on the main harness connection. with a purchase invoice of 3,200.*

 

I thought they came with a warranty? Have you called Monster about the mess they sent you?