How do you use Action Replay Max?

Does Action Replay MAX work on PS2 slim?

It works with the PS2 slim, lots of ready to use codes.

Is there a GameShark for PS2?

Take your gaming to a new level with the GameShark 2 for the PlayStation 2 console. GameShark takes the #1 cheat software and enhances it with an improved interface, Auto and Expert cheat modes for easier code selection, and broadband compatibility for quick code updates.