Ok posted last week but no response. Ok when mainting a speed usually between 40-50 mph the truck seems like it won't go into gear, when it goes into gear my tack goes crazy!! and the truck kind of bucks like rpm go in and out make sense? already replaced speed sensor no go, took to Amco and the guy told me that when they took the speed sensor out there was metal on it ok sooooo. . the person who had it b4 me towed heavy loads w/o putting it out of over drive whatever. Ok had a thought been reading about TPS cleaned mine up and whoohoo drving for a while it fixed well guess not... . started to do the same thing but this time not as often i'm thinking tps went to napa they don't have it only dealer item for $400. 00 or more. HELP I NEED SUGGESTIONS $3,000. 00 FOR transmission OR $400. 00 FOR SPEED SENSOR these are my every day wheels.