Noisy diff, need part# for updated lube

C-5 has loud differential / and or / rear axle noise, anybody know
p/n for updated fluid ?
GM mentioned C-6 and Cadillac XLR in service bulletin for this.
My local dealer said... huh ?

"Yamaha Rider" > wrote in message
...
> C-5 has loud differential / and or / rear axle noise, anybody know
> p/n for updated fluid ?
> GM mentioned C-6 and Cadillac XLR in service bulletin for this.
> My local dealer said... huh ?

GM part number 88862624 (US-1 Quart) DEXRON® LS Gear Oil

Have your dealer look at TSB 07.04.20.002A

>> C-5 has loud differential / and or / rear axle noise, anybody know
>> p/n for updated fluid ?
>> GM mentioned C-6 and Cadillac XLR in service bulletin for this.
>> My local dealer said... huh ?
>
> GM part number 88862624 (US-1 Quart) DEXRON® LS Gear Oil
>
> Have your dealer look at TSB 07.04.20.002A
>
>


I think he is referencing a recall. They changed my limited slip clutch
plates and installed the new lube.
Didn't make difference. Still makes a little noise in a tight turn. Big
deal.

Ed

"Yamaha Rider" > wrote in message
...
> C-5 has loud differential / and or / rear axle noise,
> anybody know
> p/n for updated fluid ?
> GM mentioned C-6 and Cadillac XLR in service bulletin for
> this.
> My local dealer said... huh ?
>

if ya got a c5 ?
I wouldn't pay too much attention to the c6 service
buletins.

for the c6;
Important: DO NOT add any limited-slip additive (friction
modifier). With this new fluid (Dexron LS Gear Oil 75W-90)
it is no longer required to add friction modifier. If
friction modifier is added, it will cause the fluid to lose
some of it's friction reducing properties as well as
reducing seal life.

Fill the differential with the new DEXRON® LS gear oil, P/N
88862624 (Canadian P/N 88862625). Refer to the table listed
below for lubrication specifications.

2004-2005 XLR (Including Export) and 2005 Corvette (Non
Export)
1.72 liters
1.85 quarts

2006-2008 Corvette Export (Non Z06)
2.16 liters
2.28 quarts

2006-2008 Corvette Z06
2.75 liters
2.91 quarts

Parts Information:
Description: DEXRON® LS Gear Oil
Part Numbers:
88862624 (US-1 Quart)
88862625 (Canada-1 Liter)

above info from:
http://www.southerncarparts.com/info...hp?pages_id=43


my2¢
--
'Key
=====

"Spud" > wrote in message
...
>
>>> C-5 has loud differential / and or / rear axle noise, anybody know
>>> p/n for updated fluid ?
>>> GM mentioned C-6 and Cadillac XLR in service bulletin for this.
>>> My local dealer said... huh ?
>>
>> GM part number 88862624 (US-1 Quart) DEXRON® LS Gear Oil
>>
>> Have your dealer look at TSB 07.04.20.002A
>>
>>
>
>
> I think he is referencing a recall. They changed my limited slip clutch
> plates and installed the new lube.
> Didn't make difference. Still makes a little noise in a tight turn. Big
> deal.
>
> Ed

Making noise in a tight turn is a lube problem. Didn't see where he said
that. In a straight line it's the ring and pinion gears or a bearing. Doubt
if fluid will help unless it's low.

Al

Thanks for ideas and insight guys, I will try GM's latest snake oil,
in a week or so, then post results.
Joe in CA

On Aug 13, 5:42*pm, "'Key" > wrote:
> "Yamaha Rider" > wrote in message
>
> ...
>
> > *C-5 has loud differential / and or / rear axle noise,
> > anybody know
> > p/n for updated fluid ?
> > *GM mentioned C-6 and Cadillac XLR in service bulletin for
> > this.
> > * My local dealer said... huh ?
>
> if ya got a c5 ?
> I wouldn't pay too much attention to the c6 service
> buletins.
>
> for the c6;
> Important: DO NOT add any limited-slip additive (friction
> modifier). With this new fluid (Dexron LS Gear Oil 75W-90)
> it is no longer required to add friction modifier. If
> friction modifier is added, it will cause the fluid to lose
> some of it's friction reducing properties as well as
> reducing seal life.
>
> Fill the differential with the new DEXRON® LS gear oil, P/N
> 88862624 (Canadian P/N 88862625). Refer to the table listed
> below for lubrication specifications.
>
> 2004-2005 XLR (Including Export) and 2005 Corvette (Non
> Export)
> 1.72 liters
> 1.85 quarts
>
> 2006-2008 Corvette Export (Non Z06)
> 2.16 liters
> 2.28 quarts
>
> 2006-2008 Corvette Z06
> 2.75 liters
> 2.91 quarts
>
> Parts Information:
> Description: DEXRON® LS Gear Oil
> Part Numbers:
> 88862624 (US-1 Quart)
> 88862625 (Canada-1 Liter)
>
> above info from:http://www.southerncarparts.com/info...hp?pages_id=43
>
> my2¢
> --
> 'Key
> =====

after fluid change go to a big parking lot and do slow large figure
"8" s to get the new fluid between the posi plate

"TCW" > wrote in message
...
>
> "Yamaha Rider" > wrote in message
> ...
>> C-5 has loud differential / and or / rear axle noise, anybody
>> know
>> p/n for updated fluid ?
>> GM mentioned C-6 and Cadillac XLR in service bulletin for this.
>> My local dealer said... huh ?
>
> GM part number 88862624 (US-1 Quart) DEXRON® LS Gear Oil
>
> Have your dealer look at TSB 07.04.20.002A
>
While they're looking up that TSB have them look up TSB 07-04-95-001A
May 29, 2008 (Replace wheel drive shaft nut) [2]. Can become very
noisy if loose and they have changed the torque spec from 118 ft/lb
(160 N-m) to 160 ft/lb (215 N-m) plus the addition of a thread locker
(272 Loctite), 34 M/M socket required. Been there, done that, thought
I'd lost a CV joint on the outside end of the wheel drive shaft.

Also Mobile 1 LS 75W90 gear lube is a replacement for the 88862624 GM
lube and is half the price, includes the friction modifier, sold at
Advance Auto. Note the "LS" designation in both the gear lubes.
Working fine so far, will certainly say something if it doesn't
continue to do so.