Does my shark fin have GPS?

Hi Guys,



I have recently had CIC Retrofitted and the GPS reception is pretty hit and miss and hate having the ugly looking GPS aerial on the dash.



My question is how can i tell if the shark fin aerial on the roof has the GPS as well.



I have factory bluetooth and a telephone mount in the armrest.



Any help will be appreciated.



Im hoping i can buy a 5 meter GPS cable and plug it in.