Can anyone get some info on this...I think it differs from PIP4395A

2008 CHEVROLET CORVETTE TSB 4052 Details
Bulletin #: 4052
Sequence #: 10022794
Component Name: 103000 power train:automatic transmission
Make: Chevrolet
Model: Corvette
Year: 2008
Summary: 2-3 upshift slip or flare. *kb

2008 Chevrolet Corvette 103000 power train:automatic transmission Technical Service Bulletin

 

I'd try using the search function here in the Forum and Google it as well. A web site that often has decent (preliminary) TSB info is:

http://www-odi.nhtsa.dot.gov/tsbs/tsbsearch.cfm

Maybe one of the GM techs will jump-in and help.

 

The bulletin has been updated and is now #PIP4395C. You dealer should have access to this information.

 

You are good! You always have the CORRECT answer!

 

PIP4395C: Flare And/Or Harsh 2-3 Shifts - keywords bump delay second slip third - (Nov 19, 2008)


Subject: Flare and Or Harsh 2-3 Shifts


Models: 2007-2009 Cadillac Escalade, Escalade ESV, Escalade EXT

2007-2009 Cadillac SRX, STS, XLR

2006-2009 Cadillac STS-V, XLR-V

2009 Chevrolet Avalanche, Tahoe

2008-2009 Chevrolet, Suburban

2006-2009 Chevrolet Corvette

2007-2009 Chevrolet Silverado

2007-2009 GMC Sierra

2007-2009 GMC Yukon Denali, Yukon XL Denali

2009 GMC Yukon

2008-2009 GMC Yukon XL

2008-2009 Hummer H2

2008-2009 Pontiac G8

Equipped with 6L80 (RPO MYC) or 6L90 (RPO MYD) Automatic Transmission




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This PI was superseded to add to the DO NOT replace list. Please discard PIP4395B.


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

Condition/Concern:
Some customers may comment on a flare or harsh 2-3 shift.

Recommendation/Instructions:
This condition may be caused by leaking 1-2-3-4 and 3-5-R clutch fluid seal rings (230 in SI document 1698360). The following conditions are indications that the fluid seal rings may be leaking:

• Delayed/extended or delayed with harsh feel initial Park to Drive and/or Reverse to Drive shifts, that are more likely to occur when the transmission temperature is below approximately 40 degree C (104 degree F).


• Harsh or flaring 2-3 shifts that are more likely to occur when the transmission fluid temperature is in the approximately 0 degree C (32 degree F) to 40 degree C (104 degree F) temperature range, but can be present at any temperature.


• Harsh 2-3 shifts that are more likely to occur at less than 50% tp.


Vehicles built in the January through August, 2007 time frame are more likely to have leaking fluid seal rings

Important: When inspecting the 1-2-3-4 and 3-5-R clutch fluid seal rings (230) there probably will not be visible signs that the seal rings are damaged.

If any of the conditions above describe the flare/harsh 2-3 shift condition replace the 1-2-3-4 and 3-5-R clutch fluid seal rings (230).

DO NOT replace the valve body, TCM or fluid pump cover assembly.

Important Note: The 1-2-3-4 and 3-5-R clutch fluid seal rings (230) must be properly oriented when they are installed. Incorrect installation could lead to fluid leakage and shift concerns. Refer to SI document 2178811 for installation directions.

 

Great info.

 

I saw this older post on service bulletin 4395, but did not see a lot of folks who have had this problem.

My 07 has had this condition since I bought it. I am reluctant to have the dealer take it apart to replace the seals. Anyone had this done? And with success?

thanks

joe

 

My 08 A6 had all of the symptoms associated with PIP-4395. It would often bang on down shifts especially in slow traffic. It would also slip on the 2-3 and hunt on the 3-4 in both Drive and Sport. I had the TSB done last week and I am happy to report that the TSB solved all of my shifting issues. The tranny no longer bangs and hunts. The 2-3 shift is crisp and firm. Here are the parts that were used for those of you who might be out of warranty:

Quantity Part# Description
3 24238238 Ring 4.189
1 24224577 Seal 4.226
1 24236927 Seal Kit 4.005
3 88861045 Fluid


Below is the complete description of the TSB:
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Some customers may comment on a flare or harsh 2-3 shift.

Recommendation/Instructions:
This condition may be caused by leaking 1-2-3-4 and 3-5-R clutch fluid seal rings (230). The following conditions are indications that the fluid seal rings may be leaking:

• Delayed/extended or delayed with harsh feel initial Park to Drive and/or Reverse to Drive shifts, that are more likely to occur when the transmission temperature is below approximately 40 degree C (104 degree F).


• Harsh or flaring 2-3 shifts that are more likely to occur when the transmission fluid temperature is in the approximately 0 degree C (32 degree F) to 40 degree C (104 degree F) temperature range, but can be present at any temperature.


• Harsh 2-3 shifts that are more likely to occur at less than 50% tp.


Vehicles built in the January through August, 2007 time frame are more likely to have leaking fluid seal rings

Important: When inspecting the 1-2-3-4 and 3-5-R clutch fluid seal rings (230) there probably will not be visible signs that the seal rings are damaged.

If any of the conditions above describe the flare/harsh 2-3 shift condition replace the 1-2-3-4 and 3-5-R clutch fluid seal rings (230), DO NOT replace the valve body or TCM

 

great info
my 07 has had these symtoms for a while, but as stated, once the trans temp goes past 104 degrees it works fine!!!
Now all I need is the trans manual, so I can do it.