#2
A few things might be wrong with JP's rig,this is without knowing the year/make/model and mileage so it's just guessing..#1 could be he just needed tans fluid,without enough the trans won't shift..#2 when the trans controller sees a problem it thinks could cause potential damage to the trans it will shut off the relay that powers the shift solenoid pack..#3 shift linkage broke or came undone,#4 The transmission oil pump quit building pressure needed to engage the clutch packs in the transmission which is pretty much the number 1 problem.#5 I would check the color and smell of the fluid,if it ain't red/pink,which indicates AOK as far as nothing is burnt up and the level.If it's smells burnt,yellow or brown.not good.#6 could be torque converter also.What ever the case,there should be codes that will help in finding the problem.Easiest to eliminate is checking fluid level and color/smell.