I checked fuel lines and there clean I also have power to obd2 just says communication error I got a new ecm and was programmed to my vin and nothing has changed still have an error with communication and no run

is it possible it has something to do with the bcm(body control module) im starting to believe half the promblem is in the security system and possibly something else for the other half

BCM could have a factor in it .. thats what happened to my Sonoma .. mine was shorting out the fuel pump .. not sure how all that works .. LOL... I hate electrical .. :argh: