Question about 2002 GMC Yukon XL
Already replaced the plugs and wires, checked each coil. Disconnected the battery cable to clear code but i comes ight bach. Engine runs rough at idle and service engine light flaches at speeds above 30.
You probably have water in your fuel . Use some Stabil healthy dose and then some isopropyl alcohol gas line antifreeze that Will probably fix it . and fill it at a popular gas station , not a little station that only sells a little gas. Its either that or you might have a pluged cattalyitic converter. Try this site . http://www.obd-codes.com/forums/search.php?search_id=active_topics
Posted on Mar 09, 2009
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Posted on Jan 02, 2017
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