My 2016 GMC Sierra 5.3 L83, is exhibiting signs I lost a coil pack. It has 44,000 miles on it, but there have been a few intermittent failures of coil packs noted on the internet forums. This just started up a few miles ago. If I am cruising and it is in high gear at low RPM and the converter is locked up, when I try to lug it it will buck. If I keep it up long enough it will set a temporary check engine for misfire. The more moisture there is in the air the more it will act up. It is progressively getting worse. The problem now is which coil pack?
Is there a way to tell reasonably for certain which cylinder is actually misfiring with the scanner?