[Alvin]

I'm getting a pretty annoying whine between 50-65 mph. Somehow I don't think the dealer is going to warrenty it with the built tranny, stall, and turbo

Anyone else getting the same issues? I'm at 10k miles now.

I'm going to rebuilt it probally with a 3.73 gear.

 

[BBA]

Sounds like a bad bearing or gear lash not setup right.
Take it to the dealer.

 

[SuperSS27]

I'm getting a pretty annoying whine between 50-65 mph. Somehow I don't think the dealer is going to warrenty it with the built tranny, stall, and turbo

Anyone else getting the same issues? I'm at 10k miles now.

I'm going to rebuilt it probally with a 3.73 gear.

Its prolly the turbo....:biggrin2:

 

[Nightmare]

im naturally aspirated and mines got a slight whine around 30-45...My technician told me that its normal on vehicles with low gears...but if it progresses to get it back to his shop....so i dont know!

 

[BBA]

Take it back. It's not normal unless it isn't setup right, then it wears the gears down after about, oh, how long does it take for the warranty to expire...

 

[kopykat]

That is not normal... Take it in!

 

[K2Racing]

Mine moaned terribly at slow speeds with only 2500 miles on it. They just replaced the entire differential in it and all is great. Have 3500 miles on it now and no issues so far....

 

[Pladdpezzpunk]

Mine did it, just tighten up the lash clearance. even if the someone rebuilds it, it's not uncommon on a steep set (IE 4.10:1) to have to tighten up after an initial break in. bearings wear in to the race a slight ammount and the ring and pinion will glaze loosing some clearance. especially when chevy publishes a clearance with a .010 difference between min and max. This leaves too much interpretation up to the tech who really only knows whats written in the manual anyways.

 

[GMTURBO]

I have a whining in mine also - but its only at high speeds and I notice it coming from the passenger side more than the rear.

 

[1BadAction]

I have a whining in mine also - but its only at high speeds and I notice it coming from the passenger side more than the rear.

damn, beat me to it. :cheers1:

 

[1fastfamilyman]

Alvin, change your fluid first. I swapped to Royal Purple 75W-90, and the whine went away. That was at 3K miles, and I'm now at 25K, and still no whine.

 

[laling]

is this whine occurring on WOT? mine does...

 

[thechad]

annoying whine

Slap her she'll learn in time.

Mine was whining from 20mph to faster the louder. Fuckin LOUD like blender at 110 mph

I just got mine back from the dealer(not modded) But the tech replace pinion and carrier side bearings. Cleaned the housing out good and set the following specs...

pinion preload 28" lbs.
total rotating torque 40" lbs
Backlash at .005"

and its quite as a.... rear end should be

 

[thechad]

Update five days later and now whining loud on decel, i thinking a pinion bearing that thay just replaced. Not sure though i guess it could be transfercase ???

 

[stillrollin]

My rear axel has a low pitched moan between 40 and 45 mph.
I just finished changing the gear oil over to GL-100 VP.
It's still there. I think I'll give it another three thousand miles then take it into the dealer and give him the problem.

 

[lt1z]

I'd just swap to 3.73s on your own. Won't cost much and will save you gas. You have plenty of torque with that turbo.