Go to the press start screen and press Y, X, White, Y, X, White, X, X, Y, White, X, Y
Go to the press start screen and press Y, Y, White, X, X, White, Y, Y, Y, X, X, X
Go to the press start screen and press X, X, White, White, Y, Y, White, X, Y, Y, X, White
Pick the track Arizona reverse until you get to the railroad track. Which is not very far. Turn right until you get to a dirt road. Go over a little hill and 2 houses will be on the left go right in between them and there is the chest. If you need help pause the game and the first title you can go to press that to see a big map. You will see the dirt road this is for a lot of money.
Submitted By: Brandon
This cheat takes a while but it's worth it. Once you have a truck successfully complete a mission, any mission is fine but the more money you earn on the mission the faster you'll gain money. After you have completed the mission. Save the game as you regularly would, then go to garage, profiles, save game, press B, then choose no to save game. This will put you back on the end of mission screen. After this don't save and keep doing it again, it'll work over and over.
Submitted By: Dallin Steed