Cheat codes for gta 4?

Just dial this on your phone and call they should work
Health & Weapons
Give Niko health and weapons. 482-555-0100
Health & Armour
Give Niko health and armour. Blocks the achievement "Finish Him." 362-555-0100
Weapons (Advanced)
Baseball Bat, Grenades, Combat Pistol, Combat Shotgun, SMG, Carbine Rifle, Combat Sniper, RPG. 486-555-0100
Weapons (Poor)
Knife, Molotovs, Pistol, Pump Shotgun, Micro SMG, Assault Rifle, Combat Sniper, RPG. 486-555-0150
Remove Wanted Level
Remove any police wanted level. Blocks the achievement "Walked free." 267-555-0100
Raise Wanted Level
Add one star to Niko's wanted level. 267-555-0150
Change Weather
Select from eight different weather types. 468-555-0100
Spawn Annihilator
Spawn an Annihilator helicopter in front of Niko. 359-555-0100
Spawn Jetmax
Spawn a Jetmax boat in front of Niko. 938-555-0100
Spawn NRG-900
Spawn an NRG-900 bike in front of Niko. 625-555-0100
Spawn Sanchez
Spawn a Sanchez bike in front of Niko. 625-555-0150
Spawn FIB Buffalo
Spawn an FIB Buffalo in front of Niko. 227-555-0100
Spawn Comet
Spawn a Comet in front of Niko. 227-555-0175
Spawn Turismo
Spawn a Turismo in front of Niko. 227-555-0147
Spawn Cognoscenti
Spawn a Cognoscenti in front of Niko. 227-555-0142
Spawn Super GT
Spawn a Super GT in front of Niko. 227-555-0168

Just dial this on your phone and call they should work
Health & Weapons
Give Niko health and weapons. 482-555-0100
Health & Armour
Give Niko health and armour. Blocks the achievement "Finish Him." 362-555-0100
Weapons (Advanced)
Baseball Bat, Grenades, Combat Pistol, Combat Shotgun, SMG, Carbine Rifle, Combat Sniper, RPG. 486-555-0100
Weapons (Poor)
Knife, Molotovs, Pistol, Pump Shotgun, Micro SMG, Assault Rifle, Combat Sniper, RPG. 486-555-0150
Remove Wanted Level
Remove any police wanted level. Blocks the achievement "Walked free." 267-555-0100
Raise Wanted Level
Add one star to Niko's wanted level. 267-555-0150
Change Weather
Select from eight different weather types. 468-555-0100
Spawn Annihilator
Spawn an Annihilator helicopter in front of Niko. 359-555-0100
Spawn Jetmax
Spawn a Jetmax boat in front of Niko. 938-555-0100
Spawn NRG-900
Spawn an NRG-900 bike in front of Niko. 625-555-0100
Spawn Sanchez
Spawn a Sanchez bike in front of Niko. 625-555-0150
Spawn FIB Buffalo
Spawn an FIB Buffalo in front of Niko. 227-555-0100
Spawn Comet
Spawn a Comet in front of Niko. 227-555-0175
Spawn Turismo
Spawn a Turismo in front of Niko. 227-555-0147
Spawn Cognoscenti
Spawn a Cognoscenti in front of Niko. 227-555-0142
Spawn Super GT
Spawn a Super GT in front of Niko. 227-555-0168
and dont forget to pick me as the answer winner