Any one out there know how to program a keyless entry with remote start on a 2005 g6 gt?

take it to the dealer... they have to hook the Tech II up to it so that the car will recognize the remote...

Ya, dealership had to do mine.

they have to use a tech2 to pair a remote with the car. It cannot be done by a DIYer.
You can program the key though. Thats in your manual.