Cheat codes are codes you can get for a specific game that allows you to get farther in the game and/or help you in some way. Cheat codes are basically cheating by using a code or some kind of...
use any search engine and search "GTA San Andreas cheats." it will give you a variety of different websites though they might have ALL of the cheats. Keep Searching!
There are many different websites that offer in depth cheat codes. Some examples of these websites are Gamefaqs and Gamespot. the best is cheatcc(code central)at www.cheatcc.com