[fenixjn]

As mentioned Tomtom and Garmin use the maps on the sd card, they have the added possibility of connecting to the internet for weather/traffic data but you can always disable it.

As far as your GPS not working... I would recommend you to stay away from QuickGPS as a recent issue with the file it downloads to your device caused many TPs to have a broken GPS (GPS would freeze the phone as soon as a lock was acquired, or a lock would not be acquired at all), the fastest way to fix it was to flash a new radio. SeasGEE also known as Quick Position (search over XDA) has replaced QuickGPS on my TP and has worked flawless so far.