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2004-2007 Cadillac CTS-V General Discussion Discussion, Bad News - difficulty shifting into gear in Cadillac CTS-V Series Forum - 2004 - 2007; Originally Posted by darkman The motor mounts are liquid-filled units which eventually develop leaks. The leakage leaves telltale signs of ...
  1. #31
    fweasel's Avatar
    fweasel is offline Cadillac Owners Fanatic
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    re: Bad News - difficulty shifting into gear

    Quote Originally Posted by darkman View Post
    The motor mounts are liquid-filled units which eventually develop leaks. The leakage leaves telltale signs of brownish liquid in the vicinity of the mounts. The motor mount failure rate varies more with how many times the driver "punches" the throttle.
    I don't mean to derail this thread, but I too am a new owner and also have a reverse gear selection issue. Your description of the motor mount fluid was a light bulb moment for me. I just noticed a small spot on the garage floor the other day, rust colored, and thought nothing of it until I had the car in the air this weekend. I noticed the same, rust colored fluid stains on the bottom of the oil pan, that looked to have traveled down from above that location, along the side of the engine block.

    My immediate assumption was coolant, freeze plugs maybe, but could not find any signs of leaking with a quick visual inspection. While I have revshift blue MM's to install eventually, I've been under the impression my OEM's are still good because the engine doesn't shake when I turn it off, and they don't appear to be collapsed or deformed. My past experience with liquid filled bushings have all been Nissan varieties, and they leak clear silicone. Could a dried out, rusty liquid trail from the side of the block down to the oil pan be indicative of a leaking motor mount? That could also explain my reverse gear selection issue as well. Looks like I may have found next weekend's project.

  2. #32
    Andringa is offline Cadillac Owners Enthusiast
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    re: Bad News - difficulty shifting into gear

    Yes, the fluid filled mounts leak a brownish liquid which turns into a kind of rust brown powder when dry.

    Like this:

  3. #33
    fweasel's Avatar
    fweasel is offline Cadillac Owners Fanatic
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    Re: Bad News - difficulty shifting into gear

    did you sneak into my garage and take that picture? That's exactly what my pan looks like. Thanks for the verification.

  4. #34
    Andringa is offline Cadillac Owners Enthusiast
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    Re: Bad News - difficulty shifting into gear

    Actually I have no idea whose car it is, found it on Google.

  5. #35
    Biged412 is offline Cadillac Owners Member
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    Quote Originally Posted by darkman

    According to the GM Service Manual the only listed symptom related to a failing transmission mount that I can find is the inability to shift the transmission into ONE of the gears. See attached.

    Revshift (add on the right side of the page) sells an insert for the OEM mount.

    You should also know that all of the aftermarket transmission mount options can introduce a slight increase in felt vibration (I don't have one yet so I'll defer to others on that subject.)
    I am suffering the same . I can find reverse if I "slam" the shifter to the right , then up , but I don't want to continue that abuse. There didn't seem to be a conclusion. Any ideas ?

  6. #36
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: Bad News - difficulty shifting into gear

    Checking to make sure the clutch isn't dragging is the first step in troubleshooting gear selection issues. The disc might be warped if it has been abused making lurid starts.
    Don't mess with Binky Bear!


  7. #37
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Bad News - difficulty shifting into gear

    Quote Originally Posted by Biged412 View Post
    I am suffering the same . I can find reverse if I "slam" the shifter to the right , then up , but I don't want to continue that abuse. There didn't seem to be a conclusion. Any ideas ?
    See attached.

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