Well, i figured it out yesterday... i will reply to Blazers last post first. Fuel pressure is good, IAC has been removed cleaned, then replaced when it still "surged", the vehicle does not have cruise or a/c, and the HVAC control was in the "off" position. Well, to put you all at ease, and make me a very plaesed owner, i fixed the problem yesterday. The EGR valve was bad, so I replaced that, and it runs like it is brand new...
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