Slow speed groaning when shifting into 1st (M6)
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2009-2014 Cadillac CTS-V General Discussion Discussion, Slow speed groaning when shifting into 1st (M6) in Cadillac CTS-V Series Forum - 2009-2014; I've had my V wagon for a few weeks. I love it, but I've noticed a moan/groan sound when I ...
  1. #1
    EB_1920 is offline Cadillac Owners Member
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    Slow speed groaning when shifting into 1st (M6)

    I've had my V wagon for a few weeks. I love it, but I've noticed a moan/groan sound when I shift from neutral to 1st gear. Sounds like it's coming from the rear of the car. Seems worse when I'm turning.

    Anyone have any ideas? I've read about issues with the differential, but I haven't heard of any issues when shifting from neutral to first.

    By the way, I also had a corsa axle back exhaust put in. Could it be rubbing against something due to the vibration caused by shifting?

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    CavemanB52's Avatar
    CavemanB52 is offline Cadillac Owners Enthusiast
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    Maybe down shifting too early

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    This car doesn't like down shifting hard I got away from it

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    Cadillac Cust Svc's Avatar
    Cadillac Cust Svc is online now Cadillac Customer Service
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    Re: Slow speed groaning when shifting into 1st (M6)

    Quote Originally Posted by EB_1920 View Post
    I've had my V wagon for a few weeks. I love it, but I've noticed a moan/groan sound when I shift from neutral to 1st gear. Sounds like it's coming from the rear of the car. Seems worse when I'm turning.

    Anyone have any ideas? I've read about issues with the differential, but I haven't heard of any issues when shifting from neutral to first.

    By the way, I also had a corsa axle back exhaust put in. Could it be rubbing against something due to the vibration caused by shifting?
    Congrats on your recent purchase of your V-Wagon, EB_1920! I am sorry you are experiencing a noise issue when shifting gear. If you are willing to bring your vehicle into the dealer for a diagnosis, please let me know. I can assist you throughout this process. We can be contacted via private message and are more than happy to help discuss your current situation.

    Sincerely,

    Laura M.
    Cadillac Customer Care

  5. #4
    vagondr is offline Cadillac Owners Fanatic
    Automobile(s): '13 CTS-V wagon WD graphite 6MT Corsa Sports
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    Re: Slow speed groaning when shifting into 1st (M6)

    Are you down shifting from a higher gear while driving or is it during shifting to first from neutral with the car at rest? I avoid much down shifting to engine brake because of the back firing from the Corsa muffs. For a year I had an annoying vibration when engaging the clutch in first and sometimes at idle, from the right rear. Sometimes there was knocking or a rattle over rough surfaces. It sounded like the exhaust or suspension was the source but I couldn't turn up anything. No luck after inspecting the battery compartment and emptying the rear storage compartment including the spare tire kit. You know it was real annoying If I spent this much time on it. When rotating my tires a few weeks ago I heard that damn knock and discovered it was from a large cable or wire harness resting on top of the plastic wheel well wall, clearly visible with the wheel off. I pulled on the plastic and the vibration/rattle is gone. There is an occasional knock but that doesn't bother me as I know it's not coming from a loose strut or something. The plastic has memory so I imagine the noise will return and I'll have to tack up the cable or find some other permanent solution. For now no squeaks or rattles and I'm loving it. This could be your problem if your "groan/moan" is my "rattle/buzz/thud/knock." If not you, perhaps my discovery will help preserve the sanity of another member or two.

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