05 2500 radio in an 03 blazer?
 

hey all Ive searched a bit but havnt found a strait answer. I just got a new blazer well new to me its an 03 2 door blazer with 120k miles. I love the whole car exept one thing it doesnt have a cassette for an aux... I really like the stock radio and my dad has a 05 2500 super duty with what looks like the same radio just with a cassette. his cd doesnt work mine does.

So in a perfect world we could switch with no problem, but as we all know this isnt a perfect world.

I know they would need reprogramming but before i take it all apart theres some people that say the harnesses are different from 03 to 05 does anyone know for sure before I possibly break something for no reason?