I am looking to buy this system, but was wondering if it fits into all vehicles or only certain ones. I have a 1993 GMC Suburban 1500 and wasn't sure if it would automatically fit or if a mod would be needed to the dash or something. Please help me out here...THANK YOU!!!

It will fit fine, you need a dash kit, and if you want, Metra makes a pocket to go where your old radio is too. Also a antenna adapter and wiring harness Scosche GM02B).

Thanks. I appreciate it!!!