Rear Axle Grinding
Thread Starter
Instructor
Joined: Jan 2000
Posts: 106
Likes: 0
From: Chesapeake, Va. USA
Rear Axle Grinding
Need some help - have had car to dealer over 4 times for grinding in axle on turns and while traveling straight. Fluid was drained and changed - quiet for a short time and grinding came back.
Last time dealer said both wheel bearings were bad. Replaced, changed fluid again - grinding is now back.
Car has done this for 3 years. When I back up or turn it actually feels like the rear end is kicking out - kind of like riding a bike tire over a can and it kicks your wheel.
Gm friend is trying to get me a new axle but don't know if I can - anyone have any ideas?
Last time dealer said both wheel bearings were bad. Replaced, changed fluid again - grinding is now back.
Car has done this for 3 years. When I back up or turn it actually feels like the rear end is kicking out - kind of like riding a bike tire over a can and it kicks your wheel.
Gm friend is trying to get me a new axle but don't know if I can - anyone have any ideas?
Le Mans Master
Joined: Jan 2001
Posts: 6,444
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
Re: Rear Axle Grinding (xlr8n99)
I don't have any grinding sounds, but I do get that "kicking out" feel sometimes when I make a hard right hand turn. I'd like to know why that happens too!
Tom
Tom
Thread Starter
Instructor
Joined: Jan 2000
Posts: 106
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From: Chesapeake, Va. USA
Re: Rear Axle Grinding (xlr8n99)
Yes they are adding the additive everytime. The car is quiet for a short time but then starts up again . When turning figure 8's trying to work in the additive there is no improvement.
I'd describe it like putting wheels on and not tightening the lugs tight and the wheels wobble . But it does it on turns. I also here the noise going straight.
When the mechanic changed the wheel bearings he thought he had the fix - I knew he didn't. He was still bothered by the rear still making noise - so he changed the fluid.
It's now getting old.
I'd describe it like putting wheels on and not tightening the lugs tight and the wheels wobble . But it does it on turns. I also here the noise going straight.
When the mechanic changed the wheel bearings he thought he had the fix - I knew he didn't. He was still bothered by the rear still making noise - so he changed the fluid.
It's now getting old.
Former Vendor
Joined: Apr 2001
Posts: 10,976
Likes: 21
From: FL
St. Jude Donor '13
Re: Rear Axle Grinding (xlr8n99)
If they are putting synthetic in,have them switch to GM# 12345977 and an additive (as per GM)...If the noise comes back after that,they will need to replace the posi clutch disc packs :yesnod:
The additive has a tendency to seperate from synthetic (states it on the bottle),combined with excessive varnish buildup on the clutch plates,will cause the noise to return :yesnod: There is no way of cleaning the varnish from the clutch plates short of removing them...
The additive has a tendency to seperate from synthetic (states it on the bottle),combined with excessive varnish buildup on the clutch plates,will cause the noise to return :yesnod: There is no way of cleaning the varnish from the clutch plates short of removing them...
Pro
Joined: Apr 2000
Posts: 701
Likes: 1
From: Nashville, TN
Re: Rear Axle Grinding (C-5 TECH)
If they are putting synthetic in,have them switch to GM# 12345977 and an additive (as per GM)
Thread Starter
Instructor
Joined: Jan 2000
Posts: 106
Likes: 0
From: Chesapeake, Va. USA
Re: Rear Axle Grinding (xlr8n99)
I know the additive has been added - it lists it on the repair order.
I've had a very high up GM friend talk directly to dealer.
It's gotta be more than fluid.
Question, is there any danger driving this car like this. I have this awful dread that the wheels will fall off :(
g
I've had a very high up GM friend talk directly to dealer.
It's gotta be more than fluid.
Question, is there any danger driving this car like this. I have this awful dread that the wheels will fall off :(
g
