Loud whine - but only while coasting/ decelerating

[V8fairy]

VX auto with LS1 V8. Not engine related, only happens while car is moving. I dont think its a wheel bearing as it sounds like it is from under the car, and doesnt change if I go around a corner in either direction. Gets consistently higher pitched and louder with speed regardless of what gear its in. And as soon as I even touch the accelerator slightly, it disappears completely. Has been happening for quite a while but has gotten worse lately.

Sounds like a thrust bearing type issue, but not sure if thats a thing with the auto boxes

 

[BlackVXGTS]

Sounds more like the differential. Had the same problem in my (manual) VX GTS. New crown wheel and pinion fixed the problem.

 

[Trevor loves holden.]

Put a Banana skin in the diff.

 

[Slowvxss]

^^^ Ignore the retard above.

 

[Trevor loves holden.]

His a little slow ^^^ it will come to him later...

 

[Slowvxss]

His a little slow ^^^ it will come to him later...

Ok enlighten me.

 

[EYY]

If sedan, fold down the middle seat and go for a drive. If it’s the diff it’ll be twice as loud. Pinion bearing may be toast.

 

[Utel67]

Ok enlighten me.

It's a myth that shonky used car salesman use to put banana peels in a noisy diff to quieten it down on test drive, TLH probably knows about it because he probably was a used car salesman, in fact he was probably that good he could sell rubbers to a monk.

 

[Trevor loves holden.]

It's a myth that shonky used car salesman use to put banana peels in a noisy diff to quieten it down on test drive, TLH probably knows about it because he probably was a used car salesman, in fact he was probably that good he could sell rubbers to a monk.

 

[Fu Manchu]

VX auto with LS1 V8. Not engine related, only happens while car is moving. I dont think its a wheel bearing as it sounds like it is from under the car, and doesnt change if I go around a corner in either direction. Gets consistently higher pitched and louder with speed regardless of what gear its in. And as soon as I even touch the accelerator slightly, it disappears completely. Has been happening for quite a while but has gotten worse lately.

Sounds like a thrust bearing type issue, but not sure if thats a thing with the auto boxes

What about asking your Mother Inlaw to get out?