Why does your 2000 Chevy Tracker engine die occasionally I have replaced the fuel filter 3 times. It acts like vapor lock?

you replaced the filter, how about the pump? if you have then start from the front of the vehicle and work your way back, when is the last time you have tuned up your truck? spark plugs wires, belts air filter, oil change oil filter, transmission flush? even fuel injection cleaner....when your truck gets so many miles on it, it is a given that you are going to have problems. these trackers have decently priced parts, you should not have had to replace the filter that many times. check the pump itself and replace it, which is what you probably should have done before replacing the filter.