Go to the following websites for tons of Action Replay codes for Pokémon Diamond!
http://us.codejunkies.com/search/codes/cheat_codes.aspx?selp=3&game=Pokemon-Diamond&gameID=17826135&page=0
http://us.codejunkies.com/search/codes/cheat_codes.aspx?selp=3&game=Pokemon-Diamond&gameID=17826135&page=1
Hope this helps!
I wish!
at http://cheatswebster.yolasite.com/
There are no cheats in Pokemon diamond, although you can buy action replay and get all of the cheats possible like: Every Pokemon,999 Master Balls ETC
Cheat for pokemon diamond
4523743965
If you use cheats you are a fool.You ruin the game
all pokemon:1224f558 2234a907
cheats cheats cheats
there is none
Trade with people.
yes it has lots of cheats for Pokemon diamond i have it right in front of me now
you do need cheats