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Message: <blockquote data-quote="Wilsongone" data-source="post: 21176" data-attributes="member: 7779">Hello and sorry to jump right in.  My 2018 Equinox Premier 2.0L T FWD has failed with all lights (CEL, Stabilitrack, etc) is in Limp mode.  Onstar reports 3 codes P300 (General misfire) P700 (TCM) and P2821 (Pressure control solenoid stuck on).  Car runs super rough, but seems to shift (although it acts like in limp mode).  I dropped it at the dealer...(stealer) ...and they want.....hold on you your seats....$10,500 to fix this issue.  I am more than a little concerned that this is just way out of line?  Perhaps I can just change the pressure solenoid and it might be OK?  Or do we really think this car is toast?I am of the opinion that perhaps I just change the solenoid and clear the codes and off we go, but this thing does have 225K on it, so ?Any advice?</blockquote>