Please stop referring to yourselves as professionals. You weirdos are probably the furthest things if not remotely close to a professional. Chiltons manuals are for wannabe mechanics. They don't even make it to the level of wannabe technicians.
Everybody knows (or should know by now … since it’s been almost 30 years running) that any information they get via the Internet is suspect … unless it comes from a trusted (and verifiable) source. For automobile repair information, the “trusted” sources are Helm Factory Service Manuals and AllData (and there are others that only the “pros” know about, I’m sure … including the “inside information” that Manufacturers share with Dealerships).
But we (the backyard DIY-ers, primarily), also have these online Forums where we can share experiences with “like” vehicle Owners … which is also beneficial … but the information really cannot be “verified” or trusted at face value. We kind of build up a trust with certain sources over time, based on a Member’s input. What we’d really like is a GM-run Forum where
actual Engineers provide input … but … that’s apparently never going to happen because the Companies want to tightly control dissemination of information for both profit and legal exposure reasons. So … the Forums are the best we can do (sadly). Some Members on these Forums
are “professionals” … or have retired, or moved on to other professions (for whatever reason). Their input can also be very helpful … but again … they
say they are (or were) “professionals” … but is that really true??? We cannot verify it! We have to depend on “time” again … what they say … when they say it … and then vet that against other information to decide if it makes sense.
Right now … you
say you’re a “professional”, and you’ve called others “non-professionals” … but you are an untrusted source right now. This Forum has no idea
what you are … so … it’ll be the “time” test for you … and so far … you’re flunking the test miserably!
But … if you stick around here and start providing meaningful input, your stock and reputation will rise, and then … if you can improve your social skills, you have a good chance at becoming one of the more valuable Members here.