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engine power reduced

  1. 2008-2013 CTS General Discussion
    Hey guys, I have an 08 CTS with the 3.6l DI engine. I just got the vehicle, and it was already in limp mode; the previous owner (who said he was an aircraft mechanic) was obviously out of patience for it. P0087 code. The high pressure pump has been replaced, as well as the fuel pressure sensor...