GS problem

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Jan 19, 2017 | 05:04 PM

teddycarnut

Thread Starter

Racer

Joined: Aug 2013

Posts: 445

Likes: 37

GS problem

My gs with 1200 miles at dealer. Makes a very loud thumping sound when driving. Feels like something is ready to fall off. Happens mostly backing up or making a uturn. Possibly posi or rear. All the time when car is first used backing out of garage, Any ideas/

Jan 19, 2017 | 05:12 PM

L1FRDOG

Racer

Joined: Jan 2017

Posts: 379

Likes: 248

From: Stafford VA

^^^ Where does it sound like it is coming from, Front, Back, Transmission, Wheels? Is it only when turning?

Last edited by Steve Garrett; Jan 19, 2017 at 09:35 PM. Reason: No need to re-quote the previous post, especially if you're the next person posting.

Jan 19, 2017 | 05:24 PM

JonMN

Safety Car

Joined: May 2016

Posts: 4,492

Likes: 1,028

From: MN

Slow, sharp turns only?

Jan 19, 2017 | 05:30 PM

mpuzach

Race Director

Joined: Mar 2005

Posts: 16,684

Likes: 1,193

From: La Center WA

If I'm understanding your car's symptoms correctly. there's nothing wrong with your car. From page 281 of your owner's manual:

Tire Chatter/Hop
When driving at slow speeds and in

very tight turns, the vehicle may

have tire chatter/hop. This is normal

and the vehicle does not require

service.

Jan 19, 2017 | 05:35 PM

speedlink

Safety Car

Joined: Apr 2007

Posts: 4,548

Likes: 609

From: Southeast, WI

^^^

Last edited by Steve Garrett; Jan 19, 2017 at 09:36 PM. Reason: No need to re-quote the previous post, especially if you're the next person posting.

Jan 19, 2017 | 06:01 PM

Steve_R

Team Owner

Joined: Mar 2012

Posts: 49,418

Likes: 3,933

From: Best Island in the U.S.

St. Jude Donor '12 thru '17

Yup, there is nothing wrong with the car.

Why don't people read the Owner's Manual?

Jan 19, 2017 | 06:42 PM

bearphoto

Safety Car

Joined: Dec 2009

Posts: 4,194

Likes: 305

From: Lake Havasu City Arizona

SoCal Events Coordinator

St. Jude Donor '12

OP clearly has no idea about corvettes and did not read the manual. So lets make it clear for him. There is nothing wrong with your car. When its cold out (like it is now and most winters) and you have ultra wide tires on any car (like corvettes have) and you are moving slowly forward OR reverse you will experience tire skip or whatever you want to call it. ITS NORMAL!

Sorry to the rest of you, I get irritated seeing the same question asked or mentioned over and over and over again. I'm done now, lol.

Jan 19, 2017 | 06:48 PM

Always Red Dave

Race Director

Joined: Oct 2005

Posts: 10,020

Likes: 3,429

From: Plymouth Massachusetts

2025 C7 of the Year Finalist- Unmodified

2024 C7 of the Year Finalist - Unmodified

2020 C7 of the Year Finalist -- Unmodified

Get these tires and all your noises will be gone!

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Jan 19, 2017 | 06:57 PM

gpuglisi

Racer

Joined: Jun 2003

Posts: 484

Likes: 59

From: Southbury CT

Quote:

Originally Posted by teddycarnut

Search for Ackermann Effect to learn why the car does this. Here's a link to get you started. Don't worry about asking questions, that's what the forum is for.

https://en.wikipedia.org/wiki/Ackerm...ering_geometry

Jan 19, 2017 | 07:21 PM

#10

qwksvt

Intermediate

Joined: Dec 2016

Posts: 34

Likes: 1

From: Jackson, TN

My GS even had a hang tag in the car explaining this issue and informing you that is in fact normal.

Jan 19, 2017 | 07:26 PM

#11

Z06 1of38

Drifting

Joined: Aug 2014

Posts: 1,497

Likes: 682

Rtfm...

Jan 19, 2017 | 07:28 PM

#12

F4 Phantom

Melting Slicks

Joined: Jan 2014

Posts: 2,789

Likes: 500

Quote:

Originally Posted by Always Red Dave

Get these tires and all your noises will be gone!

Bye, bye, handling.

Jan 19, 2017 | 07:35 PM

#13

Zaphod B

Racer

Joined: Nov 2015

Posts: 405

Likes: 176

Rough crowd tonight.

To the OP: I'm surprised the service writer at the dealership didn't educate you and send you on your way. Wait, I take it back - not surprised at all, since most service writers know ****-all about Corvettes.

Jan 19, 2017 | 07:53 PM

#14

JonMN

Safety Car

Joined: May 2016

Posts: 4,492

Likes: 1,028

From: MN

Hey OP, this caught me off guard too. Never had a car with such a pronounced effect.

Jan 19, 2017 | 09:54 PM

#15

CSevenGS

Racer

Joined: Dec 2016

Posts: 262

Likes: 84

From: Green Cove Springs, FL

My salesman, the service manager and the guy detailing the car when I was taking the keys all told me about the tires.

Jan 20, 2017 | 01:36 AM

#16

teddycarnut

Thread Starter

Racer

Joined: Aug 2013

Posts: 445

Likes: 37

Hey Bearphoto get a life. I have had more vettes than you will ever dream of starting with a 1962. I own 3 of them at this time. My problem is more then tires,wait and see. Thanks everyone else for suggestions