PS2 Crashing at the same place ALL THE TIME!!!

I've skimmed through a few posts about PS2's crashing, I couldn't find anything about my problem.

Whenever I go to the last Haitin mission (on GTA:Vice city), my PS2 crashes. Sometimnes it just stops, other times it clicks at me and it sometimes, but rarely, sounds like it is trying to chew up my game. I have got past this mission quite a few times before, but now it won't let me.

My PS2 hasn't crashed on any other games, just this one.

And one more thing, if I physically crash in the game, then my PS2 crashes. I've got to walk everywhere and hope that some pyscho doesn't hit me as I cross the road.

Anyone got any suggestions???