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Message: <blockquote data-quote="the old man" data-source="post: 29274" data-attributes="member: 15454">03 chevy 4x4 4.8 auto trans ... this one really bugs me. every so often and i mean every 6 months sometimes a year or more goes by i will have a gremlin jump up and bite me in the a$$... it happened yesterday sitting in line to get meds.out of nowhere it started skipping and idle went down and shut off.. i cranked back up same thing,,,, this went on for 3 or 4 minutes , i got it running and so i backed out and parked .i started it again and it cranked up i revved the engine a few times and it skipped then cleared up. driving home i felt it hiccup once after that it runs perfect.it did this about a year ago while i was driving ... seems like it does it more after its driven for several miles.it gives no check engine light when this happens or codes.today i cleaned the mass airflow unit and she cranked right up idled smooth and ran perfect. ... so i don't know what could cause this and be so infrequent .... anybody got some ideas ???????</blockquote>