my wife and i have a 95 yukon, 4x4, 350 tbi that has a rough idle. now being out of town it has decided last week at a stop to feel like it was going to die as the wife said. then saturday(3-24) it did it at start up for her. she put it in gear and still kept sputtering. turned it off then on again and it was fine. now i hate electronic anything in a vehicle and still drive a 1980 chevy 4x4. any problem info i should look for. full on maitenance done yearly besides oil every 3k. fuel filter 10k ago.