Don't second guess yourself, I still stick by what I said..........
'99% odds not the PCM...............at least not here.'
People testing parts themselves even if accomplished mechanics means nothing to me at all and I easily found another much cheaper cause to the issue that I didn't see accounted for first. I've found that just like the PCM sales mentioned below most have no idea of what 'complete' testing of any given part means, even guys who have done that work supposedly for many years. Again, like below, playing the numbers. Human intervention taken into full account, indeed that intervention is what produces most of the questions, specifically the completeness of it all. You'll never get 100% completeness over the web...................I call 75% GOOD and most closer to 30%.
Out of 350,000 cars at least a very few will have a bad PCM but that in no way means you tell everybody to buy one, playing the numbers there. All any person who works on cars can do..............
I SOLD the damn things and I saw and say that most of them were sold for nothing, probably like a true 90% or so. The other ten percent needed one, it happens. Biggest problem with the PCM sales was having to argue with people wanting 100% refunds when the things are now flashed custom on each one, that did NOT refund and like $100 of the cost. People now firmly believe they should be able to take the entire auto store home with them to try out 50 parts then bring it all back in the morning to get refunded for every single part they have installed then pulled back off to throw into the box greasy, broken, or missing parts. They only insist they should have to pay for the one part that fixes it after lowering the quality of all the others tried out to where no one wants to buy those any more. Maybe 50% were absolute -sses about it and in the case of the PCMs, if they knew you were NOT the person who directly sold it to them they then claimed the spiel we gave on every PCM sale that the reflash and shipping cost was non-refundable was never given to them. Or, the gutless lie. You grew to expect that, people being what they are. I certainly had them calling the district managers enough over it trying to get me fired, it leaves a bad taste in your mouth. Not my fault some idiot wasted the months apartment rent on a stupid guess there, but they sure tried to make it so. People are much more desperate than smart.