The Cheats: (for PC):
To activate the cheat, just write it when your playing or in the pause menu (esc).The cheats are not case sensitive. NO SPACES!

Skin/Costume cheats:

Change skin to that of Lance Vance  - LOOKLIKELANCE
Change skin to that of Mercedes - FOXYLITTLETHING
Change skin to that of Phil Cassidy - ONEARMEDBANDIT
Change skin to that of Diaz - ALLCHEATSHAVEBEENCRACKED
Change skin to that of Sonny Forelli - IDONTHAVETHEMONEYSONNY
Change skin to that of Hilary King - LOOKLIKEHILARY
Change skin to that of Love fist member - ROCKANDROLLMAN
Change skin to that of Ken Rozenberg - MYSONISALAWER
Change skin to that of Dick  - WELOVEYOURDICK
Become fat  - DEEPFRIEDMARSBARS
Change costume - ISTILLLIKEDRESSINGUP

Vehicle/Traffic Cheats:

Get a Blood ring banger  - TRAVELINSTYLE
Get a Bloodring banger #2 - GETHEREQUICKLY
Get a Hotring racer #1 - GETTHEREAMAZINGLYFAST
Get a Hotring racer #2 - GETTHEREVERYFASTINDEED
Get a Rhino Tank - PANZER
Get a caddy golf car - BETTERTHANWALKING
Get a Trashmaster  - RUBBISHCAR
Get a Hearse (funeral car) - THELASTRIDE
Get a Sabre Turbo - GETTHEREFAST
Wheels are only shown, no car body - WHEELSAREALLINEED
Cars are pink - HAIRDRESSERCAR
Low gravity cars - COMEFLYWITHME
Blowup all cars - BIGBANG
Girls get in your  - HOPINGIRL
Non  slip,perfect grip  - GRIPISEVERYTHING
Cars can drive on water - SEAWAYS
Cars are black   - IWANTITPAINTEDBLACK
Insane Drivers - MIAMITRAFFIC
All traffic lights are green  - GREENLIGHTS
Large tires - LOADSOFLITTLETHINGS

Civilian Cheats:

People are agressive towards you; - NOBODYLIKESME
Armed pedestrians - OURGODGIVENRIGHTTOBEARARMS
Armed Women - CHICKSWITHGUNS
Pedestrians attack each other - FIGHTFIGHTFIGHT
Women follow you around  - FANNYMAGNET

Weather Cheats:

Foggy; - CANTSEEATHING
Clouds - ABITDRIEG
Light clouds, sunny - APLEASANTDAY
Heavy rain - CATSANDDOGS
Beautiful day - ALOVELYDAY

Police Cheats:

Lose all wanted level stars - LEAVEMEALONE
Gain 2 wanted stars at a time - YOUCANTTKEMEALIVE

Weapon Cheats:

Light weapons - THUGSTOOLS
Medium weapons - PROFESSIONALTOOLS
Heavey weapons - NUTTERTOOLS

Other Cheats:

Make time pass faster  - LIFEISPASSINGMEBY
Make time pass slower - BOOOOOORING
Light up a cigarette and smoke  - CERTAINDEATH
Commit suicide  - ICANTTAKEITANYMORE

    Source: geocities.com/fatmanprime