2019 GMC Sierra: Factory "engineer" was full of SHIT!
Transfer case had metal to metal sound, replaced under warranty.
The very day i picked it up the transmission started making noise and speedometer fluctuated, brought back to dealer, a few weeks later the gmc factory engineer dropped the pan and said it was the speed sensor hitting the relucter, can't buy parts so it needs a new $7,000.00 transmission {no eta-on strike} & no waranty because of mod.
Brought it to a transmission shop, the next day he was done, shifting fork spring wasn't aligned correctly either from the factory or when it was installed-that's it, nothing to do with transmission. The factory "engineer" was full of SHIT!