Ok so my buddy has a Lbz bone stock (has been this way all 230000 miles) we'll the truck we know has a clogged egr no big deal delete on the way and some efi from rob. My question is has anyone ever seen one of these trucks have a skip around 12-1400 Rpms because of a bad cp3? We had two or three different scanners on it injectors are fine for sure. It's even been to the gm place my buddy there diagnosed the cp3 bad but to me the pump wouldn't make the truck dead skip like an injector. You can hear it skipping through the exhaust forsure.