One of the better places to find cheats online for the "Saint's Row" game series is Gamefaqs.com. This website not only offers popular cheats, such as the ability to add weapons to the character's personal arsenal, but also hosts several in-depth guides, should a player become stuck.
Gamefaqs.com also offers players the chance to post individual questions to receive help from other players who may be able to answer a question or provide a hint not found on one of the guides or on the website itself. Another popular place online to find cheat codes is Cheatcc.com. While this website lists many of the same codes for the game, the number of guides and walk-throughs isn't as high as on Gamefaqs.com.