Those rear pumpkin gaskets are surprisingly good quality. I bought a new one for changing mine and after taking it apart, the one from the factory looked almost brand new, so I just reused it! Also, no need to change the trans. fluid, the dealer changes that for you every 100k miles with the transmission😂😂😢
I'm from Boston, tranny went on our way to Florida in Savannah ga. Went to a shop called coastal transmissions.... they were great. 100k miles warranty. Even gave my and my family + the dog a ride to a hotel and picked us up 3 days later when my Tahoe was done.... that was 15yrs ago and that Tahoe is still running strong!