the biggest issue for on overdrive is at the brake light switch. its the light switch that stops the power to overdrive or lock up converter.but first i need to know which trans you have . please count the bolts that hold the oil pan on .this one has 17
ok the very first thing to do is too see if you have any transmission codes in the computer . you can go to a parts store like Auto zone .they will retrieve the codes for you at no cost .or you can retrieve them your self with a paper clip. hear is how you do that.
please let me know what codes you find. if any. thanks
by law it is supposed to be on the driver side .it could be under the driver seat.