I HAVE A 46 RE IN A 98 RAM 2500 I RECENTLY INSTALLED A TFOD-HD2 REPROGRAMMING KIT NOW I have no reverse and some serious overlap in forward gears. manual low works fine but in 2nd & drive it almost immediately tries to shift but just feels like engine braking. i have 85-90 psi at accumulator port in manual low and 125 at rear servo. in reverse i have 0 psi at both locations. i also replaced both servos with sonnax parts. the accumulator had been replaced with a sleeved unit from sonnax during a previous repair.

 

Install problem. Maybe have a chat with Trans-Go?