Some of this is for Fisher...as I know he wants to buy one. A GM Tech 2.
Anyway....victim is 2009 Chevrolet Traverse....getting a misfire at just the right load at highway speed. 115k miles.
So far...and to my surprise...no P0300 code.
Likely a coil going bad...or maybe a bad plug...but where to look?
Picture says it all. GM Tech 2 misfire graph. Better go check cylinder #2....Intake has to come off to get to #2....pretty easy to do....but not as easy as fixing 1,3,5...but n