I paid for a diagnostic and was told they couldn't find the problem & should take it to a dealership.
Dealership's diagnostic was a failing injector and EGR valve, which were already replaced by PRK Automotive. PRK now adivses I should go take the truck to one "a shop they trust" for yet another diagnostic because they don't believe the one from the dealership.
Now, I'm lying and "reading stuff into" our discussions. At the end of the day, they have no intention of working on my truck and it's MY fault for doing what they told me I needed to do.
Extremely disappointed and out several hundred dollars!