Hi yes i own a 2003 4.8 silverado with a rly werid missfire i had the tech2 on it the 4 days ago b.c the check engine light was on and it idles rly rly weird when i stop. and a missfire code came up on #2 and i already replaced all the coil pack on it and did a fuel injector clean and new plugs and wires on everything so i have no clue what it could be theres only 100k miles on it. i heard alot about the intakes leaking could that cause just one missfire tho??? and its adding alot of fuel b.c of that so maybe i thought the pcv valve?? any ideas plz??!!!b.c ive just been
all day long about this.