While playing, press [`] or tilde to activate the console, then type any of the following cheat codes.

Code – Result
cheat money – $5,000,000
cheat points – 100 Points
cheat all – 5 Million and 100 Points
cheat quest # – Access Quest # (0-31)

Free repairs

If you break your truck go to the truckdealer and change the truck then take the truck you have before it will be repaired for free.
Note if you do this all your truck improvements will be gone.