P1740 code on 02 ram, help?

Don't know if anything has changed in regards to 1999-2001,or 02 Dodge trannies. But I wouldn't run anything but Mopar ATF+4 tranny fluid. it's a full synthetic fluid, and back then it was known that "other" tranny fluids did not work in those finnicky trannies. I went thru transmission hell with my trucks back then, and learned the hard way. Use "ATF+4.
Dave