I think they do, but I'd call them to be sure.
Also, if you do get a new alternator, have it tested before you leave the store. I had Advance go through 3 "rebuilt" alternators once before they found me one that worked. That was after returning two previous alternators that never worked. I would also consider Autozone for this. They keep a national database, and you never need a receipt for a return. There again though, I went through 3 water pumps in as many months on the truck last year from them. Sure it's a lifetime warranty, but it is a PITA when it all goes wrong. I still like the security of that lifetime free replacement though on stuff like starters and alternators since if it goes when you are broke it is free to fix it.