Rear bumping noise

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Jun 3, 2018 | 12:59 PM

Grandy's C5

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3rd Gear

Joined: Jun 2018

Posts: 3

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Rear bumping noise

'04 LS1, every morning that I take it out, 100 feet out of the driveway, I hear a bump from the right rear. Was told that it's the ABS recalibrating. Is that right?
Grandy

Jun 3, 2018 | 02:08 PM

Smoken1

Joined: Apr 2013

Posts: 5,034

Likes: 1,156

From: Oregon

St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23

No, on a 04 the ABS unit is the front

Jun 3, 2018 | 02:10 PM

DaleInColorado

Heel & Toe

Joined: Jul 2013

Posts: 21

Likes: 3

From: CASA GRANDE Arizona

Me too on rear bumping noise - C5

I have had my C5 up in the air 3 times with techs who found nothing loose. Bump comes from right rear. I hope someone knows something about this.

Quote:

Originally Posted by Grandy's C5

'04 LS1, every morning that I take it out, 100 feet out of the driveway, I hear a bump from the right rear. Was told that it's the ABS recalibrating. Is that right?
Grandy

Jun 3, 2018 | 02:20 PM

corvettezman

Race Director

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From: Home of the VOLS ! Knoxville, TN. Tennessee

St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19

Check your sway bar end links for missing or worn out boots.

Jun 3, 2018 | 03:11 PM

Vetteman Jack

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Moved to C5 Tech.

Jun 3, 2018 | 03:43 PM

Grandy's C5

Thread Starter

3rd Gear

Joined: Jun 2018

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Quote:

Originally Posted by Vetteman Jack

Moved to C5 Tech.

This only happens in the morning when I leave, exactly 100 feet down my street, same spot every day, and not again until the next time I take it out.
Grandy

Jun 6, 2018 | 12:17 AM

striper

Le Mans Master

Joined: May 2005

Posts: 6,366

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From: Fort Lauderdale, Florida

Try this. Loosen and remove the nut on the axle on the right rear. Move axle slightly inward and regrease the splines on the axle stub that go into the hub carrier. Re install and torque the axle nut back to specs. Good chance this will fix it, had been a common problem for a while.

Jun 6, 2018 | 09:47 AM

seattle

Burning Brakes

Joined: Aug 2001

Posts: 877

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From: Surprise AZ

Quote:

Originally Posted by striper

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Nov 24, 2019 | 09:37 PM

Rick369

Burning Brakes

Joined: Jul 2014

Posts: 1,170

Likes: 253

From: Oconomowoc Wisconsin

Quote:

Originally Posted by Grandy's C5

This only happens in the morning when I leave, exactly 100 feet down my street, same spot every day, and not again until the next time I take it out.
Grandy

I have the same exact issue on my 2004 A4 Vert. It just started doing this. Were your axle nuts loose and was this the problem?