Hello,guys here is my problem. i have a 96 blazer w/ over200k on it.it runs and drives,but i am having trouble with hesitation and shut off when i hit the accelerator pedeal.i checked the alternator gage and it was dropping,had the alternator tested,its good.replaced the neg batt cable and both o2 sensors, thinking about replacing the pos batt cable and also having the pcm rebuilt.any ideas ??????