I own a 2004 Chevy Silverado V6 4.3L over the past few months it’s Been bogging out and stalling at red lights and while driving down the highway. The other day it died at a gas station, got jumped from the positive terminal to the ignition control module and the guy said I have no spark. I replaced the ignition control module after that but beforehand, the fuel pump, entire Distributor, fuel lines, Mass Airflow sensor, spark plugs, catalytic converters, multiple sensors, fan belt and that’s all I can really think of as of now. The vehicle ran fine after I added a few grounds from the motor to the frame near the battery and a ground coming from the manifold going to the firewall on the passenger side. The truck cranks but doesn’t start. If It would start and stay running I would run firm for about 2-3 days then die spontaneously. Once I added those two grounds It ran good then died after about a week and a half after running good. The motor has no spark I’m simply confused on what to do next.

same ground as part of ground on manifold ^