03 5.9 qc, recently the trucks been hitting a deadspot around 2500 rpm on a moderate acceleration.... Not all the time, very random instances, any clues? Just getting the norm p0601 code. Coil, plugs and wires are only about 2 months old,cap an rotor less than a year.

 

its the pcm, i had the same code, its an internal error for the pcm. eventually it wont run. get it changed asap. i got mine off ebay for 200 then overnighted to an extra 50. the dealer wanted over 1000, for it.

 

I was thinking you might say that. Guess its finally givingh up on me.

 

So if I buy a pcm off ebay do I need to have it "programed" b4 installation?

 

they will program it for you, you tell them your mileage,and old pcm p/n i believe, but i didnt and havent had any problems with mine.