This is one way to open Snoop on PS2:
1.Start the second episode in the game:
Episode 2: Mean Streets
Mission 1: Cruising for leads
2.When Nick appears in the city, press SELECT to bring up the map screen.
3.On the controller, press the following buttons in order: R1, L1, Up D-pad, R D-pad, L D-pad, Down D-pad, L3 (L analog joystick button down), R3 (R analog joystick button down), X, Square, Circle, Triangle.
4.You should hear a sound and the screen should fade into Nick standing in the city. IF NOT, do the entire series of buttons again until you hear the sound and the map screen disappears, leaving Nick in the city again.
5.Walk into the garage next to Nick's starting position and the game will save.
6.When you are inside the garage, press the START button to pause the game and EXIT the mission to the main menu.
7.Select RESUME GAME and choose the license plate for the game you just played. You will be taken to the EPISODE BRANCHING screen. If you input the code and followed the directions correctly, you should see Snoop's head in the upper left corner of the screen.
Select the SNOOP HEAD icon to play in "Snoop Mode."
True Crime streets of la official website : click here