Question about 2004 GMC Yukon

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04 Yukon is having trouble accelerating sometimes..

I have been having trouble with my '04 Yukon. I'll be driving and long and all the sudden it'll stop accelerating, it will only go 35mph for a couple a minutes and if I turn off the car it will reset itself and I don't have trouble. The other day this happened and went on for about 20 minutes. Had it tested and it came back as knock sensor and low fuel pressure. Could it be the knock sensor causing this trouble?

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Not the knock sensor
A mechanically bound fuel pump, could though,thus low fuel pressure
A bad fuel pressure sensor ,also

Posted on May 14, 2010


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