This is especially aggravating since this is at a Chevy dealership and not some local garage. Chevrolets are all these guys do. They get trained on them and this isn’t even some obscure model anymore. Goes to show you that at the end of the day, so many of these mechanics are knuckle-dragging grease monkeys that think they know everything and are too stubborn to take in the training that I have no doubt was given to them or listen to people that know better.