Advice anyone please? Blazer dying when coming to a stop like at stop lights. check engine light has been on for some time, code reads too much air in fuel system. changed the fuel filter, it was very

I dont know exactly what you mean by "too much air in fuel system" I'd image that you're talking about LEAN codes, in which the engine control module reads the 02 sensors and they say the engine is running lean (too much air, not enough fuel) so I suspect it's adjusting the fuel trim up so that it over-fuels to the point of flooding and stalling....First I would check fuel pressure (just because a pump is running doesnt mean the fuel pressure is correct...and GM is known for its shitty fuel pumps).Drive it with a fuel gauge on it and observe the fuel pressure when it dies.... I would also check for a vacuum leak...intakes are common, so are vacuum lines and there is vacuum pot for the 4wd that should be checked for cracks/leaks as well. also check and make sure the MAF sensor is cleaned...I reccomend having a technician check the MAF sensor for cleanliness, as they are easy to break the resistors and expensive to replace...hope this helps! FR GM master tech