Please Help
Thread Starter
7th Gear
Joined: Apr 2019
Posts: 7
Likes: 0
Please Help
I just did a diagnostic at GM and this came back: "found torque tube front bearing walking back" and "excessive crank shaft end play"? Can anyone PLEASE explain this. I own a 2017 C7 grand sport. Yes newer car but voided my warranty because of mods 😫. Am I in the creek now with this issue? My car shakes before it can switch gears with a manual and even stopped in mid drive on the freeway. When I try to start it up, it cranks but doesn't kick over then eventually kills the battery after 2 or 3 tries. Please help.. GM is trying to make me change the whole engine with other things at $22k. That's ridiculous
Le Mans Master
Joined: Mar 2016
Posts: 9,123
Likes: 3,975
From: 2019 CMG Z06
Just curious, what mods do you have that killed your warranty? Usually dealer tells GM that a specific mod seems like the cause of the failure. Also, is this a manual or automatic car?
1st Gear
Joined: Oct 2018
Posts: 1
Likes: 0
I removed the cats and did a muffler delete. I went to Rydell GM and they put a block on it and I didnt know. 2 days later i put everything back on stock and tried to get it cleared but the new Keyes GM saw the welds and officially declared my vin blocked in the system. They did say it was the reason but this is my 3rd vette from 2015 and all had this same mod with no issues. Now this... and they quote $22k
Le Mans Master
Joined: May 1999
Posts: 6,511
Likes: 1,297
From: Windermere FL
From what I have read, if the torque tube is not installed correctly, the engine will eventually be destroyed and need to be replaced.
Did you or some prior owner play with the torque tube or disconnect the engine from the torque tube?
$22k sounds about right for a new engine from a Stealership without any warranty. Sorry to say that you are screwed.
Did you or some prior owner play with the torque tube or disconnect the engine from the torque tube?
$22k sounds about right for a new engine from a Stealership without any warranty. Sorry to say that you are screwed.
Safety Car
Joined: Dec 2012
Posts: 3,821
Likes: 1,844
From: St. Louis Metro East IL
OP, these service bulletins may be relevant to your issue. I don't see how a possible assembly issue is related to exhaust system mods. Did you do any work on the clutch, torque tube, or transmission that would have disturbed the torque tube connection?
https://www.corvetteactioncenter.com...tart-1295.html
https://www.corvetteactioncenter.com...dure-1313.html
https://www.corvetteactioncenter.com...tart-1295.html
https://www.corvetteactioncenter.com...dure-1313.html
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Intermediate
Joined: Mar 2019
Posts: 27
Likes: 3
I removed the cats and did a muffler delete. I went to Rydell GM and they put a block on it and I didnt know. 2 days later i put everything back on stock and tried to get it cleared but the new Keyes GM saw the welds and officially declared my vin blocked in the system. They did say it was the reason but this is my 3rd vette from 2015 and all had this same mod with no issues. Now this... and they quote $22k
Sorry i I have lots of questions , just want to be sure I don’t have the same thing happen if similar mods were done
Pro
Joined: Aug 2018
Posts: 652
Likes: 156
From: Clarksville, TN
For less than 22k you can get a bad *** build. Seems really shady that they would void the warranty over exhaust mods. Heck, I supercharged my stingray and they did the trans flush under warranty.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
This thread has Deja Vu written all over it. If you take off the CATs, you need O2 sims, a tune or both. As in the other thread, was the tune touched? If so, the case is closed.
Elmer
Elmer