Rear end grinding noise
Thread Starter
Racer
Joined: Oct 2003
Posts: 392
Likes: 1
From: Sunny Seaside Seabrook Texas (a whole 'nother country)
Rear end grinding noise
I hear a short "grinding" type noise coming from the rear wheel/area (1992 C4) at 2-3 mph when first starting out in the morning. Is this positrac needing lube? Anyone else have this problem?
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Rear end grinding noise (Lordmrwiggly)
Could be a wheel bearing, they usually quiet down when you get moving.
Jack up the rear, and grab the wheel at 12-6 and pull in and out. If you get any play, its the bearing.
May as well replace the U-joint on that side too.
Jack up the rear, and grab the wheel at 12-6 and pull in and out. If you get any play, its the bearing.
May as well replace the U-joint on that side too.
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Rear end grinding noise (Lordmrwiggly)
I hear a short "grinding" type noise coming from the rear wheel/area (1992 C4) at 2-3 mph when first starting out in the morning. Is this positrac needing lube? Anyone else have this problem?
[Modified by Steel Blue 91, 10:59 AM 10/3/2003]
Pro
Joined: Sep 2003
Posts: 670
Likes: 1
From: charlotte nc
Re: Rear end grinding noise (vader86)
I hear a whirring noise in the rear of my 86 coupe first time it is driven for the day. It lasts for a second or two. I've been wondering what that was. It is not a wheel bearing noise so it is probably the ABS self test. If yours is a grinding noise and not a whirring noise , it is probably wheel bearing. Good Luck
:cheers:
:cheers:
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Joined: Dec 1999
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From: Almost all Skyline Cruises Vettes at Waterside 1-5
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Re: Rear end grinding noise (chief253)
:cheers: ABS test comes on when you approach 4 mph, forward or reverse. You should hear a moan/groan and feel a brake peddle reaction. Hot or cold shouldn't make a difference.
If you are concerned about rear end and haven't changed the fluid or added the GM posi additive in a while, I would!@
:seeya
:steering:
If you are concerned about rear end and haven't changed the fluid or added the GM posi additive in a while, I would!@
:seeya
:steering:
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