Car will not move when in gear.... gear selector does move into all gears but car will not move

key wont come out or turn to off until gear selector is in park [ recognize that its in park ] your selector or transmission selector cable is damaged

jack up and safely go under neath vehicle and check the shift selector connection if good check cable /linkage from tranny to selector for proper connections and operations if good --try moving selector if moves try to put in neutral if hard to move or selector wont move possible internal gear damage

if you are stuck in gear it is not a basic rebuild but a bad rebuild
because of the design of the gear selection process , it is impossible to have 2 gears selected together as one selector shaft will not move unless another selector shaft is in the correct position ( neutral ) to allow the detente balls to move out of the way so the next selector shaft can move
it is possible that the gear stick is not in the correct position when it was installed back onto the top of the box and one gear was selected and the end of the lever came out of the selector slot or all the selectors were not in the neutral position and so the end of the lever went behind a selector rail
pull the gear lever turret of the top of the box, move the selector rails until they all line up as a slot across all of them , then put the gear lever end back in that neutral slot

5th and reverse gears are on the same selector rail. It is possible that the selector fork has come loose for the 5th gear or reverse. Remove the gear lever turret section of the box and see if the selector rail is moving gears or the rail itself.

This does not seem like a problem. Selector moves, vehicle moves, what is the question?

1st and 2nd gear are on the same selector rail and if you cannot move the gear lever across the slot that means that the selector rail has not been correctly positioned and the interlocking pin between the rails is not allowing them to move . I suggest that you remove the gear lever turret from the top of the box and see where the selector levers are . With your problem then one rail should be out of alignment with the slot of the other gears .If you have had the box apart then the problem is in the fitment of the selector rails.

have a friend move while you see what is hapening underneath. I suspect the control is loose on the box and is moving slightly when the lever is mover. Retensing the bolts may help.

try to replace transmission strainer first torque convertor and see if that helps if not it probabaly the transmission

Do you feel any resistance in the gear selector when shifted through gears?

i think so as well ,think you may have cooked the gearbox computer