There are three dealers in Austin. I talked to all three. Same basic story - we don't have to cover it but we will under "good will" if you spend a lot of money with us. I don't, so they won't.
The service guys are idiots for the most part. I can talk circles around them when it comes to discussing these these type of things because I've done all my homework before I have the conversation. First, the axle isn't being replaced - they claim that regreasing is a maintenance item (no answer given when I asked why it's not listed as a maintenance item in the MA section of the FSM). Second, the powertrain warranty doesn't include a lot of things. You'd think it would include the rear differential bushing, but no. According to Nissan, the bushing is part of a $900 cross member piece and costs $2500 for parts and labor to replace - I paid someone <$300 to replace just the bushing with an aftermarket polyurethane bushing. Fvck Nissan, seriously.
The guy that did my bushing quoted me $120 to regrease the axles. Less than half what Nissan wanted, and they should be doing it for free
