05 CTS 3.6 Engine or Transmission problem

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V6: 3.0, 3.2 LA3, 3.6 LY7, 3.6 DI LLT Discussion, 05 CTS 3.6 Engine or Transmission problem in Cadillac Engine Discussion; ...
  1. #1
    lkinnison is offline Cadillac Owners Member
    Automobile(s): CTS
    Join Date
    Sep 2009

    Exclamation05 CTS 3.6 Engine or Transmission problem

    New to the forum and bought an 05 CTS in June has 67,000mi. I am having a problem and not exactly sure what’s going on. First started while driving down the highway felt like engine was losing power and would jerk about 3 times. Now car is doing this more frequently. I have kept my hand on the shifter and will not move nor can I feel shifter jerk when it happens. I now notice a clicking noise when you accelerate just after you let of the gas and will shift into the next gear. When watching the RPM’s they do not move up or down when clicking or jerking happen. About as good as I can describe it. Does anyone know what might be going wrong and how much I’m looking at to get it fixed? Thanks

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  3. #2
    Bluehaze07's Avatar
    Bluehaze07 is offline Cadillac Owners Connoisseur
    Automobile(s): 05 CTS
    Join Date
    Apr 2009
    Honolulu, HI

    Re: 05 CTS 3.6 Engine or Transmission problem

    Hopefully you did not throw a rod. Check your oil level and get ur engine diag.

  4. #3
    Robs CTS AWD is offline Cadillac Owners Member
    Automobile(s): 2009 CTS AWD 3.6l Di
    Join Date
    Jan 2010

    Re: 05 CTS 3.6 Engine or Transmission problem

    Have your engine scanned for a missfire; sounds like a coil pack may be on its way out.

  5. #4
    jdzzl03 is offline Cadillac Owners Member
    Automobile(s): 05 CTS
    Join Date
    Feb 2010

    Re: 05 CTS 3.6 Engine or Transmission problem

    I had the same issue and it was throwing engine codes concerning misfires on cylinders 2, 4, and 6 and also cam shaft sensor problems. Took it in and they checked the oil, had almost no oil. Told me that because of the low oil, (obviously makes the clicking sound) but can also throw off the cam shaft sensor. As of now everything has been fixed so I would start by checking the oil.

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