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Message: <blockquote data-quote="ORVietVet" data-source="post: 22383" data-attributes="member: 9438"><p>The fact that both STFT are at "0" tells me there may be a communication problem. I have experienced the drivability problems you described, for your truck, on my own 2005 Tahoe 5.3 and was O2 sensor problems but the live data reading may be an indication of a need for a computer relearn. There are many videos at you tube, "2004 Silverado computer relearn", to look at. May also want to see if have exhaust back pressure.</p></blockquote><p></p>