Thread: monsoon add on?

Yes it can be done. I have a NAV installed in my GT1 that is supossed to be in a GTP with monsoon. I don't have Monsoon equipment. So you should be able to add 1 but you would need to add an amp and speakers. If you don't have Monsoon, you can add any GM 04-07 Grand Prix OEM HU.

i have the monsoon system in my 06 GP and you are better off with doing an upgrade with after market. i replaced my head unit with a kenwood dnx 5120 nav/dvd unit. you can get a better sound out of aftermarket. hopes this helps.