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Message: <blockquote data-quote="ORVietVet" data-source="post: 29275" data-attributes="member: 9438">Welcome to the forum, from Oregon. I experienced something like this with my 2005 Tahoe but CEL came on and was related to oxygen sensors. Any recent work to the truck?Yes, the MAF sensor could have been the problem but so could a dirty or malfunctioning throttle body. I would remove the throttle body and inspect/clean. Post pics of that process here. Look at some videos at you tube for this procedure.</blockquote>