Player Cheats:

Full Health - #1 

Car Mass (increased mass for harder collisions) - #2 

Milk Bones (increased melee attack damage) - #3 

Add Police Notoriety (+1 star to police wanted meter) - #4 

Player Pratfalls (press L1 or R1 to fall) - #5 

Infinite Sprint - #6 

Unlimited Clip (never reload, except for RPGs) - #9 

Infinite Ammo - #11 

Heaven Bound (killed bodies float upward) - #12 

Add Gang Notoriety (+1 gang attack level) - #35 

Never Die - #36 

No Cop Notoriety - #50 

No Gang Notoriety - #51 

I Am Giant (become very tall) - #200 

Itty Bitty (become very short) - #201 

Give Cash (gain $1,000) - #2274666399 

Vehicles: 

Repair Car (fixes car, boat, and helicopter damage) - #1056 

Ambulance - #1040 

Anchor - #1041 

Atlasbreaker - #1042 

Attrazione - #1043 

Backdraft - #1044 

Backhoe - #1045 

Bag Boy - #1046 

Baron - #1047 

Bear - #1048 

Bootlegger - #1049 

Bulldog - #1050 

Bulldozer - #1051 

Compton - #1052 

Eiswolf - #1053 

FBI - #1054 

Five0 - #1055 

Hollywood - #1057 

Justice - #1058 

Kent - #1059 

Mag - #1060 

Mixmaster - #1061 

Mongoose - #1062 

Oring - #1063 

Phoenix - #1064 

Quasar - #1065 

Quota - #1066 

Rampage - #1067 

Raycaster - #1068 

Reaper - #1069 

Septic Avenger - #1070 

Shaft - #1071 

Stilwater Municipal - #1072 

Superiore - #1073 

Taxi - #1074 

The Job - #1075 

Titan - #1076 

Toad - #1077 

Varsity - #1078 

Venom Classic - #1079 

Vortex - #1080 

Zenith - #1081 

Horizon (commerical helicopter) - #711 

Snipes57 (executive private jet) - #712 

Tornado (police helicopter with minigun and anti-tank missiles) - #714 

Kaneda (custom street racing motorcycle) - #801 

Kenshin (street racing motorcycle) - #802 

Melbourne (Harley-style motorcycle) - #803 

Sabretooth (custom Harley-style motorcycle) - #804 

Sandstorm (dirtbike) - #805 

Widowmaker (moped) - #806 

Hurricane (speedboat) - #825 

Miami - #826 

Python - #827 

Shark (personal watercraft) - #828 

Skipper (yacht) - #829 

Retailer Promotion Vehicles 

Gyro Daddy helicopter (two person mini-helicopter) - #4976 

Destroy UFO (two person flying saucer) - #728237 

Peewee mini-bike (very small mini-bike) - #7266837 

Weapons 

12 Gauge - #920 

44 Shepherd - #921 

AR200 (SAW-type machine gun) - #922 

AR50 (X8-type assault rifle) - #923 

AR50 Launcher (X8-type assualt rifle with grenade launcher) - #924 

AS14 (fully automatic shotgun) - #925 

Baseball Bat - #926 

Chainsaw - #927 

Fire Extinguisher - #928 

Flamethrower - #929 

Flashbang - #930 

GAL43 (Uzi-like sub-machine gun) - #931 

GDHC - #932 

Grenade - #933 

Holt 55 (fully automatic pistol) - #934 

K6 Krukov - #935 

Knife - #936 

Machete - #937 

McManus2010 - #938 

Minigun - #939 

Molotov - #940 

Nightstick - #941