I have a 17 Silverado 1500 z71 that I bought used with 89k miles on it. Around 93k or so, the transmission had to be replaced. It now has almost 100k on it. I know the transfer case fluid is supposed to be changed around this time.
My question is, what are the odds that they changed the transfer case fluid when they replaced the transmission? Or would it not be standard procedure to drop both at the same time. I've searched and have seen mixed opinions. The paperwork did not specify if it was done or not.