Low rider trucks
Enter "YRDR" as a password.
Enter "BRPS" as a password.
Enter "Y_WNT_T" as a password to have unlimited missiles. Note:
"_" indicates a space. Then while playing a game, press Left to use
Enter "CFFNYN" as a password.
Enter "JMPNG" as a password to change all textures in the
game into pictures of one of the programmers of the game.
Change track color
Enter "JMPR" as a password. Select "Done" and
"JIM" will appear in the square. Press Start, select "New
Game", then choose "Summit Rumble". Select any number of
players, but many CPU trucks. When the game begins, there should be black
squares with aliens or other objects in the middle.
Aztec Valley track
Beat a circuit on the easy difficulty setting.
Alpine Challenge track
Beat a circuit on the medium difficulty setting.
Death Trap track
Beat a circuit on the hard difficulty setting.
While driving, press Down to use the horn. Note: There are many
different type of horns that are randomly assigned at the beginning of a race.
While driving, press Up to hear "Yahoos", burps, and farts.