Google the GMPP rotors or get them from the dealer. And I am pretty sure you can use nitrogen with The TPMS. I don't see why you couldn't. Just ask the place where you would get the nitrogen. They'll know for sure
"A wise man speaks because he has something to say,
A fool speaks because he has to say something" OBZ's showoff thread!
I've checked gmpp website before and I couldn't find. Dealer might be too expensive. I just want an idea on pricing. Btw I'm on my phone and the service sucks so my internet is slow so I was hoping someone could point me where to find them.