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Message: <blockquote data-quote="gr8shot" data-source="post: 21247" data-attributes="member: 7798">Hey guys, first post here, but not new to forums.  Trying to fix my mom's 2012 equinox that's having this same issue.  This summer I replaced the high pressure fuel pump and the issue went away completely.  It recently came back about mid January.  I just replaced the HPFP again, also with the same AC Delco unit I used the first time, and it did nothing to remedy it this time.All my internet searching leads to posts with lots of discussions with no solutions.  Lots of theories, but no definitive solutions.  This thread seems to have the most knowlegable folks out of all of them I've found so far.  But again no solution.  If anyone has fixed it, I'd love to hear what did it.</blockquote>