I don't have the Nav. When my introductory OnStar cell phone minutes expired, I paired my Verizon LG cell phone, which I named Verizon in the 'Nox. When I make a call, I press the call icon on the steering wheel, and when prompted, just say "call Bill" if Bill is the name in the LG phone directory. The system responds with "calling Bill with Verizon". It calls by whatever first name I have in my LG phone. I've never tried to display the list of entries on my display - can it be done?
Late addition - December 2011 - now my hands free doesn't work right. Now I have to say "bluetooth", then "voice", then it will use my cell phone's audio recognition to allow me to call by saying the name. The original way, was press the button, say "call", and at the prompt I would say the name as it was listed in my cell phone. Now this method will only permit me to say the digits in the numbers. I go into the dealer's next week. I hope that they know bluetooth, and I also hope that it's under warranty (2011 bought in Feb of 2011).