Update - shop in Portland got go ahead to install new (serial# matched from low mileage used Tahoe). Got a call from initial shop saying they are picking up the whole bill! I was really surprised, because they were not wanting to cover bill. Only labor and half the case. I was already getting paperwork filled out for small claims. Upon removing old case, they only got .2 quarts of reddish/brown fluid
. There was metal shavings on speed sensor. They think the other shop rebuilt case with cheap parts. I had maybe a few drops over the last 9 months in garage. I thought it was from fluid that had come from old case. Cousin drove me 2 hrs to shop. Then I see they curbed the hell outta my front right wheel! They will be paying to have it fixed! Drove back 2 hours with no issues. Today my wife goes to pickup our daughter from school and she calls saying speedo doesn't work - FML!