Ok, so I'm a bonehead.
I finally got a chance to take the van out and play around with the RAM Mount, the GPS receiver and the GAIA app.
The RAM Mount worked great, the GPS receiver appeared to be working just fine, but all I could get on the GAIA map screen was "No Data Available".
After a frustrating hour of trying other maps screens, turning everything off and back on, and putting the GPS receiver in several different locations, I came home and read the instructions.
What do you mean I have to download the maps first???
Friends Don't Let Friends Do Stupid Things Alone