I have an 05 g35 WITH premium package.... NO sport and wheel package... does my g35 have the TPS sensor or is it only on certain models and packages?

 

Yes, it's standard equitpment on the G35.

All passenger cars will have tire pressure monitoring systems beginning with the 2006 model year according to a new motor vehicle safety standard by the National Highway Traffic Safety Administration (NHTSA.) (link)