Ok, then the mostly like cause is the range selector assembly. this tranny uses inputs from the selector switch to know what gear it needs to be in. in short, it is completely electronic. replacing the range switch on the side of trans should take care of both concerns. stuck in second gear and the shift indicator problem. the switch is mounted on the left side of trans. pretty simple to replace
Align the PNP switch (5) with the main housing so that the neutral assurance bracket is facing outward.