Knocking Sound Under my car

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Jul 3, 2022 | 07:16 PM

acfroma

Thread Starter

Cruising

Joined: Jul 2022

Posts: 13

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From: Palm Desert California

Knocking Sound Under my car

Any suggestions on what it could by. It's obvious on acceleration and hard braking

Jul 4, 2022 | 08:27 AM

tillyes

Intermediate

Joined: Jul 2016

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From: Nc

My guess the dreaded torque tube , if it is don’t let it continue,

Jul 4, 2022 | 08:35 AM

acfroma

Thread Starter

Cruising

Joined: Jul 2022

Posts: 13

Likes: 5

From: Palm Desert California

Torque Tube Noise

Can this be repaired or need to be replaced? My C7 GS only has 15k miles on it

Jul 4, 2022 | 08:38 AM

acfroma

Thread Starter

Cruising

Joined: Jul 2022

Posts: 13

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From: Palm Desert California

I have a service appointment this week at the dealer. Easy or hard fix because it's out of Chevy warranty but I did buy an extended warranty from the dealer when I bought the car 4 months ago. Thanks for response.

Jul 4, 2022 | 01:37 PM

tillyes

Intermediate

Joined: Jul 2016

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From: Nc

By no means an expert , on this but I wouldn’t be surprised this appears to be common on these. From what I’ve read the couplers they use are junk .. and as time goes on the couplers come in contact with torque tube and just gets worse .. numerous comments on these torque VS drive shaft .

also very important that if they take torque tube out that it is installed per GM book to the tee otherwise 2-3000 miles later you’ll be replacing engine due to thrust bearing failure , because of improper torque tube install ( alignment )

Jul 4, 2022 | 02:28 PM

tillyes

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Joined: Jul 2016

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From: Nc

It could be expensive , just depends …. $2-3000

Jul 4, 2022 | 03:49 PM

acfroma

Thread Starter

Cruising

Joined: Jul 2022

Posts: 13

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From: Palm Desert California

My under body "knocking" is not constant. It almost sounds like a creaking sound behind and under my seat or something loose. Hmmm

Jul 5, 2022 | 02:30 AM

stevettec7

Melting Slicks

Joined: Jan 2015

Posts: 2,105

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From: Fleming Island Florida

My intermittent under body knock wound up being worn end-rod links on my rear sway bar. I replaced the stock ones with Moog brand with zerk fittings so I can grease them.