you'll need an adapter but it's possible to use the antennae that's already there. I read a few posts on here. Check www.cadillacfaq.com as well. I believe there's something listed to that nature in there as well.how hard is it to hook up my sirius radio ? can you use the same antenna
lol dude I just had my first two days off in a row since DECEMBER! I fully intend to trust me and the dealer badge on rear. I had the rims with tires in my car for 3 days before I had 15 minutes to get them put on!