I have a 03 CC,DRW with stock mirrors an can't see for sh** out of them when towing.What do you guys use?Have they changed the mirrors on the newer trucks?

Check out the ttt mirrors. http://www.ttt-mirror.com/

I would use that link and also do a search here and on google or msn for trailer towing mirrors. You will find all kinds of stuff...

You can go for the West coast mirrors that come on a chassis cab.
http://members.aol.com/rmundy8987/gmc03.jpg

I bought the TTT mirrors for my 03 GMC drw. They are a very nice product. Installation was very straight forward. I can now see along side and behind the trailer.