Grand Theft Auto V PC Cheats:

Press ~ (the key above TAB) to bring up the cheats console, then enter the codes indicated below for the corresponding effects.

hothands - Explosive Melee Attack.

skydive - Give Parachute.

floater - Moon Gravity.

liquor - Drunk Mode.

powerup - Recharge Ability.

slowmo - Slow Motion (enter 3 times for full effect).

skyfall - Skyfall (launches you into the sky).

bandit - Spawn BMX.

comet  - Comet.

rocket - PCJ-600 Motorcycle.

offroad - Sanchez Dirt Bike.

rapidgt - Rapid GT.

vinewood - Limo.

trashed - Trashmaster.

buzzoff - Buzzard Attack Helicopter.

barnstorm - Stunt Plane.

deadeye - Slow Motion Aiming (enter 3 times for full effect).

painkiller - Invincibility.

slowmo - Slow Down Gameplay.

turtle - Max Health & Armor.

catchme - Fast Run.

fugitive - Raise Wanted Level.

makeitrain - Change Weather.

snowday - Slippery Cars Drifting.

lawyerup - Lower wanted level

fugitive - Raise wanted level

highex - Explosive bullets

incendiary - Flaming bullets

jrtalent - Director mode

hoptoit - Super jump 

toolup - Give weapons and extra ammo

gotgills - Faster swim

Cell Phone Cheat List (Open the dial-pad in the cell phone to enter cheats):

1-999-625-348-7246 - Change Weather

1-999-547-861 - Drunk Mode

1-999-444-439 - Explosive Bullets

1-999-462-842-637 - Explosive Melee Attack

1-999-228-8463 - Fast Run

1-999-462-363-4279 - Flaming Bullets

1-999-759-3483 - Give Parachute

1-999-724-654-5537 - Invincibility

1-999-5299-3787 - Lower Wanted Level

1-999-887-853 - Max Health And Armor

1-999-356-2837 - Moon Gravity

1-999-384-48483 - Raise Wanted Level

1-999-769-3787 - Recharge Special Ability

1-999-759-3255 - Skydive

1-999-766-9329 - Slippery Cars (Drifting)

1-999-332-3393 - Slow Aiming (Enter 4 times to increase effect, 5th time disables cheat)

1-999-756-966 - Slow Motion (Enter 3 times to increase effect, 4th time disables cheat)

1-999-226-348 - Spawn BMX

1-999-289-9633 - Spawn Buzzard