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Hello, Eddie here and I will do all I can to help. What size engine is in the truck please? Also, What codes are you getting? is it JUST misfire codes? Thank you.
I follow you, and it runs really bad like all those cylinders are misfiring is that correct?
Alright, Do you have a spark tester? that the coil pack can actually go over and you can check to see if there is any spark out of those coils your having an issue with the misfire code on that cylinder. I want to remove the coil pack, and then put a spark tester on it.It looks like this, if the coil isn't even putting out any spark at all on those cylinders, I would have to say it's likely the coil drivers in the PCM are failing.