ive been doin some searching and i found two answers to my question. my problem is my 1990 accord will not shift. there is also a buzzing coming from left of dash and the "s" light is on, from what ive found by searching it is either the transmission control module (TCM) or the main relay for transmission. are these the same things, or are they seperate parts? Could someone that has experience with this problem,give me some input, thanks.