i go get a Haynes Manuel,it will cover everything from the frame to the complete truck,they disassemble the whole truck up to like it was built,it be near on the throttle body.what you must be having a bucking sensation,it operates like your radio knob on your stereo . to test it get a 20 meg volt meter,and there will be 3 wires on all t.p.s,put 1 lead in the middle,and get in any other 1 to get a reading on it,slowly move the lever while watching the meter for any .0001,other then a normal reading,if there any like i sayed ,then your t.p.s is bad
