[roscoe73]

ok i'll see if i can help, i just went through a bunch of stuff on my 88 with a 350 in it.

what engine is in yours? any description i can give relate to the 350 motor.

1. do you have a manual, if not, get one.

2. knock sensor is located on the drivers side engine block just above the oil pan. kidna towardes the front. you have to get at it from under the truck. it goes into a water jacket so have a bucket handy.

esc is to the right of the tbi, a flat square thing, search autozone's website for a pic of it.

also check the groung wires by the top radiator hose inlet on the block. if they are loose or dirty that can cause problems with the esc.

also check the engine ground strap. i had a issue with mine where it was still connected but not working too well. i tested that with a extra battery cable i had around by clamping it to the engine and frame.