I am a master tech, going on…
I am a master tech, going on 50 years. I currently work in a GM dealership.
Some of the described symptoms are familiar. The parts delays, familiar. The fact that dealers cannot acquire and retain qualified, or even willing mechanics to address these issues, familiar.
But laying the blame on the dealer is largely misguided. GM is a mess and the dealer is as frustrated as the consumer, I assure you.
The real question IMO is why these problems are so common. The 6 speeds have premature pump wear due to lock up converter wear, usually related to heavy loaded use. Like a truck should be built for. The 8 and 10 speeds just have poorly modulated operation that has caused a large number of complaints since day one. The manufacturer isnt helpful in either a permanent solution, nor parts supply. The dealer isnt the bad guy here. There is no good excuse. For what these things cost they should be near bulletproof. Period.
I feel for every reply. Except the "bail out by China" guy.Dont know where he is coming from. Otherwise, trust me. Those of us in the service bays are feeling your "let down" day in and day out. The business has been in sharp decline for decades.