Is there a TSB about rear diff leak?
Pro
Joined: May 2002
Posts: 556
Likes: 0
From: Arlington Texas
Re: Is there a TSB about rear diff leak? (Evil-Twin)
New Seals and new plate. Just had mine done. Here is the Service bulletin off the NHTSA website.
Make CHEVROLET Model CORVETTE Year 2002
Service Bulletin Num 020420003 Date of Bulletin JUL 01, 2002
Component POWER TRAINRIVELINEIFFERENTIAL UNIT
Summary
SUBJECT REGARDING REVISED SIDE COVER AND GASKET REPLACEMENT (RH) / DIFFERENTIAL CARRIER COVER AND SEAL REPLACEMENT - RIGHT. *TT
[Modified by r0lands, 8:37 PM 9/22/2003]
Make CHEVROLET Model CORVETTE Year 2002
Service Bulletin Num 020420003 Date of Bulletin JUL 01, 2002
Component POWER TRAINRIVELINEIFFERENTIAL UNIT
Summary
SUBJECT REGARDING REVISED SIDE COVER AND GASKET REPLACEMENT (RH) / DIFFERENTIAL CARRIER COVER AND SEAL REPLACEMENT - RIGHT. *TT
[Modified by r0lands, 8:37 PM 9/22/2003]
Drifting
Joined: May 2003
Posts: 1,755
Likes: 97
From: Sandy Utah
Re: Is there a TSB about rear diff leak? (edmaverik)
Got mine back from the dealer today. They used Part #12369460 To repair a axle shaft oil leak. Has anyone had this seal fail after installation? :D :D
Advanced
Joined: Oct 2002
Posts: 76
Likes: 0
From: Jamestown NY
Re: Is there a TSB about rear diff leak? (edmaverik)
My understanding from another post on the forum, is that they came up with a new design seal p/n 88996703 & 89047953. Also I am encouraging people to write a complaint to:
Mr. G. Richard Wagner Jr.
GM Chairman & CEO
General Motors Corporation
300-T Renaissance Center
Detroit, MI 48265
They should repair at their cost all differential leaks caused by this known defect for cars in and out of warranty for at least a period of 5 years. :boxing
Mr. G. Richard Wagner Jr.
GM Chairman & CEO
General Motors Corporation
300-T Renaissance Center
Detroit, MI 48265
They should repair at their cost all differential leaks caused by this known defect for cars in and out of warranty for at least a period of 5 years. :boxing
Thread Starter
Burning Brakes
Joined: Feb 2003
Posts: 1,014
Likes: 0
From: Buford GA
Re: Is there a TSB about rear diff leak? (edmaverik)
Thanks everyone! I went to my local Chevy dealership service center and they are fixing my left transaxle due to a faulty seal under warranty. I will be vette-less until Thursday morning! :yesnod:
My baby is in good hands and will be parked inside the dealer's service garage for the next couple of nights though. :sad:
My baby is in good hands and will be parked inside the dealer's service garage for the next couple of nights though. :sad:
Le Mans Master
Joined: Oct 1999
Posts: 8,205
Likes: 40
From: Tucson AZ
Re: Is there a TSB about rear diff leak? (edmaverik)
I don't think the GM legal dept. will allow a TSB (there have been so many cars with this problem that it could open Pandora's differential), but as noted above, there are new seals available. :yesnod: :)
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Melting Slicks
Joined: Jul 2003
Posts: 2,960
Likes: 11
From: 59999 Posts
St. Jude Contributor
Re: Is there a TSB about rear diff leak? (bellomo)
I'm all for it. I have talked to Marisa from Mr Wagners office several times but to no avail. Seems they just don't care. If they do agree to the fix just make sure they don't use the old hammer fix. Thats what thet recommended on the panel behind the seat that pops or as they call it. The oil-canning effect. I have the same leak with only 2600 miles. will take it to dealer soon though.
Administrator
Joined: Mar 2001
Posts: 368,108
Likes: 24,732
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Re: Is there a TSB about rear diff leak? (edmaverik)
Had my differential fixed twice - two sets of seals and one side cover plate. Hopefully it is fixed for good now. Good luck.
Instructor
Joined: Jun 2001
Posts: 128
Likes: 0
From: Haltom City TX
Re: Is there a TSB about rear diff leak? (Dr.Ron)
Had my left cover PN 12458145 replaced 3 times now at 12851, 28764, 31181 miles not counting two "tightenings" to stop a little drip. The first two were anoying drips the last a MAJOR leak sending fluid all over the back of the car. Since the car was cleaned for show over the weekend - it was a catastropic leak occuring on the 100 mile ride home. Its fixed now - all under warranty but the service manager wants to "check it" with me during the next oil change - hope it lasts that long - keep everyone posted.
[Modified by yellow1, 9:00 PM 9/24/2003] [IMG][/IMG]
[Modified by yellow1, 9:01 PM 9/24/2003]
[Modified by yellow1, 9:00 PM 9/24/2003] [IMG][/IMG]
[Modified by yellow1, 9:01 PM 9/24/2003]
