3 ms·It's almost always the shark fin on the roof that has separate gps and cellular antennas.by akomtu 4y agoIt's almost always the shark fin on the roof that has separate gps and cellular antennas.vitaflo 4y agoYup, and they're very easy to disconnect.akomtu 4y agoOn some car models you'd have to disassemble half of the car to get there.myself248 4y agoSome TCUs have internal antennae too, so in case the coax is severed in a crash, it can still call 911. So, break out the soldering iron.