need help!!!
Thread Starter
5th Gear
Joined: Apr 2021
Posts: 5
Likes: 0
need help!!!
hello all really need help here, so i have a 2014 C7 automatic 3LT with 40k miles on it, dealer is telling me the ball bearings in the flywheel are bad and causing the weird knocking sound when the engine shuts off. Here is the fun part, they say outside of all warranties manufacture or extended and the entire drivetrain needs to be replaced as GM will not sell just flywheel. quoted me 5k for repair.
1. thought the automatic had a flex plate no flywheel?
2. can this be correct? the whole drive train not just parts or internals
thanks in advance this is such a headache and basically i need help with next step i cant believe at 40k i would need to replace a drivetrain
1. thought the automatic had a flex plate no flywheel?
2. can this be correct? the whole drive train not just parts or internals
thanks in advance this is such a headache and basically i need help with next step i cant believe at 40k i would need to replace a drivetrain
Burning Brakes
Joined: Sep 2019
Posts: 923
Likes: 154
From: North Port, FL
First off you dont have a flywheel, you have a flex plate. I never heard of ball bearings on a flex plate. The torque converter attaches to the flex plate.
I think the guy you talked to is a scammer. You cant get the entire drive train for 5K
I think the guy you talked to is a scammer. You cant get the entire drive train for 5K
Moderator
Joined: May 2010
Posts: 15,154
Likes: 4,186
From: Northern Illinois
2023 Corvette of the Year Winner - Modified
2022 C7 of the Year Winner - Modified
St. Jude Donor '18 thru '25
Yeah that sounds quite strange to me. I would go somewhere else. We can't hear or see the problem so in depth is hard to do through Text in a forums.. people are stating that this does not sound right, find a more knowledgeable dealer/repair shop in your area for a second opinion at the very least.
Safety Car
Joined: Dec 2012
Posts: 3,821
Likes: 1,844
From: St. Louis Metro East IL
TAKE YOUR CAR SOMEWHERE ELSE!
A good dealer has some test equipment to locate where the noise is coming from.
The flex plate connects to the torque tube. The transmission is at the other end of the torque tube, in the rear, bolted to the differential.
There are bearings in the torque tube that can fail and make noise.
Note - there is a specific procedure to install a torque tube on auto trans cars that must be followed to avoid engine thrust bearing damage.
https://www.corvetteactioncenter.com...dure-1313.html
GL
Ron
A good dealer has some test equipment to locate where the noise is coming from.
The flex plate connects to the torque tube. The transmission is at the other end of the torque tube, in the rear, bolted to the differential.
There are bearings in the torque tube that can fail and make noise.
Note - there is a specific procedure to install a torque tube on auto trans cars that must be followed to avoid engine thrust bearing damage.
https://www.corvetteactioncenter.com...dure-1313.html
GL
Ron
