Monster Jam Maximum Destruction cheats and cheat codes for Gamecube

Unlock Trucks
Complete the following tasks:

Unlock 1983 Grave Digger
Win Season One.

Unlock 20th Anniversary Grave Digger
Win Season Two on Cash Grab Mode on Hard with a championship truck.

Unlock Armored Force
Win Season Three on Cash Grab Mode on Easy with a championship truck.

Unlock Big Yellow
Win Season Two on Cash Grab Mode on Extreme with a championship truck.

Unlock Bull Dog
Win Season Two on Cash Grab Mode on Easy with a championship truck.

Unlock Dog Pound
Win Season One with a championship truck.

Unlock Hooch
Win Season Two on Extreme with a championship truck.

Unlock Incredible Hulk
Win Season Three on Cash Grab Mode on Hard with a championship truck.

Unlock IP Truck
Win Season One on Extreme with a championship truck.