I have a 2002 Chevy Blazer 2 door, 4.3lt engine. It has been stalling out on me, and when it stalls the ignition won’t turn and I can’t get it out of park. I just had the fuel filter replaced, could it be the egr valve, or what do you think?Related Questions2002 4.3 chevy blazerBlazer wont start even after replacing the crank and the starter1996 chevy blazer 4.3i can not get it to accelerate over 40 mph2003 Chevy BlazerMy windows are constantly fogging up. My heater and AC both work. This has been going on for a while but seems to be getting worse. Could it be the heater core?