Resolved!!

The stereo shop mistakenly cut the crankshaft sensor wire that was being used by my old shift light kit. Once I gave him the wiring diagram....he fixed it in 30 seconds.

Took it to Pep Boys and had them clear the code for me and as is well again...

Going to trade it in soon....now I have to think of what to get. I want an SUV but don't like any of the Infiniti models. Will be sad to leave the G35 family. I've learned a lot from the guys on here. It was fun while it lasted......

Thanks to all those who chimed in and tried to help....especially Kevin!