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  1. #1
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default Strange Transmission noise

    When sitting at light in 2017 Grand Sport in 1st gear or when coming to a stop, getting noise exactly like my 08 Z06 has when sitting a light with it in first gear with the clutch in. Only problem is this a automatic transmission. Anybody have a similar complaint. I took it to Henderson Chevrolet. They say they don't hear a thing. Sounds like a box of rocks being shook.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  2. #2
    Member jhecox's Avatar
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    Corvette(s)
    2016 Corvette Racing Yellow, Z51, OURS C7

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    I haven't noticed anything.
    Hecox

  3. #3
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default

    Well me nether until I turned down the stereo.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  4. #4
    Technical Writer for Internet & Print Media
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    Corvette(s)
    71 04 12

    Default

    No automatic should sound like a "box of rocks" when sitting at a light.

    Turns out I'm going to be in Henderson most of next week tending to some business there. Let's meet. I'd like to listen to the car.

  5. #5
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default

    Sent you a private message,
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  6. #6
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default Tranny noise

    Well the noise is back. Henderson Chevrolet say they replaced the Torque Tube. The noise returned a few thousand miles later. I took it in and the tech says he can't hear a thing. Tells me to drive some more and let the noise get louder. When I took it last week for the center stack screen going out i mentioned this again. Again the tech says he doesn't hear a thing. Now I know I am hard of hearing (too many loud bangs) but, if I can hear something it has to be obvious to anyone else. My brother hears it just fine. When the dealer called to tell me about the back ordered parts my service advisor tells me they have replaced a torque tube bearing and I shouldn't hear that noise again. If this car is continuously having problems with the torque tube or torque tube bearings, something tells me that there is a serious misalignment somewhere in the drive train. Just saying. This is the first automatic Vette I have had and I am wishing I had stayed with a manual tranny.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  7. #7
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    Corvette(s)
    1997 boosted silver coupe

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    Does it always make the noise or sometimes? If it is intermittent, record it.
    Whoosh, and blur

  8. #8
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default Noise

    It is mostly when slowing down coming to a stop.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  9. #9
    Strange Transmission noise vett boy's Avatar
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    Corvette(s)
    2008 vert 6M silver

    Default

    GM has been replacing torque converters on C7's
    Likes catbert liked this post

  10. #10
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default

    Thanks. They have been replacing the torque tube and torque tube bearing
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  11. #11
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default Torque tube

    Just left the car at Henderson Chevrolet this weekend, again. Just got it back 2 weeks ago. The intervals between repairs is getting shorter. As much as I didn't want to, I have started proceedings for a Lemon Law buyback. Out of 11 Corvettes I have owned this one is the ONLY one I have had with an issue that wasn't taken care of with one visit to the dealership. 5 times now this beast has thrown the torque tube bearing. I hope GM takes this car and dissects it to find out why it constantly wearing out a bearing that should last a lot longer than 2 weeks. Don't want any other Corvette enthusiast to experience this nightmare.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon
    Likes catbert liked this post

  12. #12
    Site Administrator Rob's Avatar
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    Corvette(s)
    1990 ZR-1 (Canadian) Bright Red / Black

    Default

    Keep us posted on what they find.
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    "Let your plans be dark and impenetrable as night, and when you move, fall like a thunderbolt." - Sun Tzu

    1990 Chevrolet Corvette ZR-1 , 350 Stock ZF 6-speed. Stock Bright Red

  13. #13
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default

    Will do. I have a case number with GM corporate. Waiting for their call today.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  14. #14
    Member korvettekarl's Avatar
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    Corvette(s)
    2017 Grand Sport 90 ZR1 57 Bel Air

    Default Strange noise

    Well GM has finally decided to buy back my 2017 Grand Sport. Found another to replace it. Just waiting for GM's "process" so I can get into my new one. VERY frustrating waiting for GM to get off it's butt and give my replacement Grand Sport. Has anyone else gone through this process? Any tips on how to keep my blood pressure down while I wait for GM get this done? Have a great Labor Day everybody.
    2017 Grand Sport Watkins Glen Gray
    2014 Premier Edition Z51
    2010 Grand Sport
    1990 White ZR1
    1972 Nova SS
    67 RS Camaro
    66 El Camino
    55 2 Door Wagon

  15. #15
    Strange Transmission noise vett boy's Avatar
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    2008 vert 6M silver

    Default

    Quote Originally Posted by korvettekarl View Post
    Well GM has finally decided to buy back my 2017 Grand Sport. Found another to replace it. Just waiting for GM's "process" so I can get into my new one. VERY frustrating waiting for GM to get off it's butt and give my replacement Grand Sport. Has anyone else gone through this process? Any tips on how to keep my blood pressure down while I wait for GM get this done? Have a great Labor Day everybody.
    I'd be thankful that GM is willing to do a buy back .

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