Are there any cheats for grand theft auto vice city?

yes some of them are:

MEDIK=full health

FPATCH=full balls meter

AMMO=full ammo (not unlimited)

NOBALLS=lower gang heat

GOBALLS=get more gang heat

FLYSTRT=lower cop heat

DONUT=increase cop heat

TBURGLR=repair the vehicle your in

there is also more just go to gamespot.com to find them