bbster

Last night while making a sharp turn at slow speed I heard a grinding noice from the rear of the car. Any thoughts or reccomendations?

Thanks All

not08crmanymore

do a search.there's a TSB on it.go to your dealer.

StLRick

I took mine in for the same thing and they did the PM on the vehcile and so far no more issues on it. It is called Rear End Clater<not sure on spelling>

LTC Z06

Subject: Rear Axle Chatter Shudder on Turns - keywords bind differential #PIP3559A - (09/08/2006)



Models: 1999-2007 Chevrolet Corvette

2004-2006 Cadillac XLR

2006-2007 Cadillac XLR-V




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This PI is being superseded to update recommendations, models and years. Please discard PIP3559.


--------------------------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Rear axle chatter or shudder on turns on Chevrolet Corvette and Cadillac XLR.

Recommendation/Instructions:
If this is the first complaint for this condition flush and fill the rear axle with mineral based lubricant P/N 89021669 (in Canada 89021670) gear lube and 4 ounces of the friction modifier additive P/N 01052358 (in Canada 992694).
If this is a repeat complaint or the condition persists after the flush and fill, replace the right and left rear axle clutch packs following published service procedures.
After clutch pack replacement use 1.6 l (1.69 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455). and 4 ounces of the friction modifier additive P/N 01052358 (in Canada 992694).

Note: 2006 Z06 equipped vehicles require 2.55 l (2.70 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 190 ml (6.4 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).

Note 2: Export vehicles use 2.01 l (2.12 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 150 ml (5.1 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).

Once the axle fluid has been changed the car must be driven in 8 - 10 SLOW figure eights to work the fluid between the clutch plates.

Note 3: PRIOR TO INSTALLING THE FRICTION MODIFIER ADDITIVE FOR EITHER OF THE ABOVE REPAIRS THE BOTTLE MUST BE SHAKEN VIGOROUSLY FOR AT LEAST 1 MINUTE TO MIX THE ADDITIVE THOROUGHLY.
__________________

mbonness

When out in the garage there arose such a clatter,
I sprang from the bed to see what was the matter,
I knew in a moment it must be the Rear Diff.

fullboogie

...I thought about the clutches and said "what if?"

Brought it to the dealer, who found nothing wrong,
I thought "this guy's crazy, must be hitting the bong."

So I drove the car home and jacked it up high,
to see if I could spot the problem with my own eye.

I found the cause of my chatter and clunk,
when on top of the gas tank I found a chipmunk.

goingdownhill

The Service Bulletin referred to was updated on 10-13-06, and the GM part number for the lubricant has changed. I don't know how to add links to this post, but if you search you will see several threads in the past month or two. There was also a poll on the number of cases reported. This is a common problem, it seems. So far, my fix has been holding.

VET4LES

The dealer did mine on Monday, so far so good.

Doug411

Do you have a song for this? Good rhyme.

Headley Lamar

"T'was the fight before #PIP3559A"

Pozzo

Thanks to Vet for following updaate:

Updated - latest TSB - 10/13/06

Just for quick reference, here’s the most recent axle chatter TSB:

Subject: Rear Axle Chatter Shudder On Turns - keywords bind differential
#PIP3559C - (10/13/2006)

Document ID# 1866944
2006 Chevrolet Corvette

2004 - 2007 Cadillac XLR
2006 - 2007 Cadillac XLR-V
1999 - 2007 Chevrolet Corvette, Corvette Z06
------------------------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern: Rear axle chatter or shudder on turns on Chevrolet Corvette and Cadillac XLR.

Recommendation/Instructions:
If this is the first complaint for this condition flush and fill the rear axle with synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and appropriate amount of the friction modifier additive P/N 01052358 (in Canada 992694). See fluid amounts listed below.

Note 1: To properly flush the rear differential remove the cover and get all of the old fluid out off the differential, wipe out the residue and then reinstall the cover and replace the fluid and additive.

If this is a repeat complaint or the condition persists after the flush and fill, replace the right and left rear axle clutch packs following published service procedures.

After clutch pack replacement use synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455). and the appropriate amount of friction modifier additive P/N 01052358 (in Canada 992694). See fluid amounts listed below.

Note 2: PRIOR TO INSTALLING THE FRICTION MODIFIER ADDITIVE FOR EITHER OF THE ABOVE REPAIRS THE BOTTLE MUST BE SHAKEN VIGOROUSLY FOR AT LEAST 1 MINUTE TO MIX THE ADDITIVE THOROUGHLY.

Once the axle fluid has been changed the car must be driven in 8 - 10 SLOW figure eights to work the fluid between the clutch plates.

Fluid capacity:

1999-2005
Corvette ALL
Differential Lube: 1.69 qt (1.6L)
Friction Modifier: 4 oz. (118 ml)

2006-2007
Base Corvette
Differential Lube: 1.95 qt (1.85L)
Friction Modifier: 5 oz. (148 ml)

2006-2007
Corvette Z06
Differential Lube: 2.70 qt (2.55L)
Friction Modifier: 6.4 oz. (190 ml)

Note 3: Export vehicles use 2.01 l (2.12 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 150 ml (5.1 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

------------------------------------------------------

Previous axle chatter TSB: 9/08/06

Subject: Rear Axle Chatter Shudder on Turns - keywords bind differential #PIP3559A - (09/08/2006)

Models: 1999-2007 Chevrolet Corvette
2004-2006 Cadillac XLR
2006-2007 Cadillac XLR-V
------------------------------------------

This PI is being superseded to update recommendations, models and years.
Please discard PIP3559.
------------------------------------------

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Rear axle chatter or shudder on turns on Chevrolet Corvette and Cadillac XLR.

Recommendation/Instructions:
If this is the first complaint for this condition flush and fill the rear axle with mineral based lubricant P/N 89021669 (in Canada 89021670) gear lube and 4 ounces of the friction modifier additive P/N 01052358 (in Canada 992694).

If this is a repeat complaint or the condition persists after the flush and fill, replace the right and left rear axle clutch packs following published service procedures.

After clutch pack replacement use 1.6 l (1.69 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455). and 4 ounces of the friction modifier additive P/N 01052358 (in Canada 992694).

Note: 2006 Z06 equipped vehicles require 2.55 l (2.70 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 190 ml (6.4 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).

Note 2: Export vehicles use 2.01 l (2.12 qt) synthetic axle lubricant GM P/N 12378261 (Canadian P/N 10953455) and approximately 150 ml (5.1 oz) limited-slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694).

Once the axle fluid has been changed the car must be driven in 8 - 10 SLOW figure eights to work the fluid between the clutch plates.

Note 3: PRIOR TO INSTALLING THE FRICTION MODIFIER ADDITIVE FOR EITHER OF THE ABOVE REPAIRS THE BOTTLE MUST BE SHAKEN VIGOROUSLY FOR AT LEAST 1 MINUTE TO MIX THE ADDITIVE THOROUGHLY.
------

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Last edited by Vet : 10-17-2006 at 01:37 PM.

OtherTime

I have been noticing that mine does this only when I am turning left. I guess I will take her in for this service. thanks