Rear End Question
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Rear End Question
My dealer found that my pinion bearing was going bad in my rear end a while back. My car has 70k miles and it seems that the previous owner drove it like a vette... 
So I wait while the dealer orders parts to rebuild the rearend(All covered under my GMPP plan)
After somtime passes I get a call from the dealer saying that my parts are in. Monday 10-2-06 I take my car in (now the fun begins).
They get everything replaced and road test it on the next Friday. I get a call saying that while they drove it they heard a grinding sound. they open up the rear end and find pieces of metal floating around. The dealer says that the piece they got from GM was deffective and they are going to do a complete rebuild again.
(Car has been in the shop for going on 4 weeks now mainly waiting on parts.)
Friday 10-20-06 I get a call that all parts are in and they will have it complete early next week.
So I wait while the dealer orders parts to rebuild the rearend(All covered under my GMPP plan)
After somtime passes I get a call from the dealer saying that my parts are in. Monday 10-2-06 I take my car in (now the fun begins).
They get everything replaced and road test it on the next Friday. I get a call saying that while they drove it they heard a grinding sound. they open up the rear end and find pieces of metal floating around. The dealer says that the piece they got from GM was deffective and they are going to do a complete rebuild again.
(Car has been in the shop for going on 4 weeks now mainly waiting on parts.)
Friday 10-20-06 I get a call that all parts are in and they will have it complete early next week.
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Originally Posted by vettenuts
Why didn't they just put in a new differential rather than repair the old one, in the long run it would have been cheaper and you would have gotten your car back quicker.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Originally Posted by vettenuts
Why didn't they just put in a new differential rather than repair the old one, in the long run it would have been cheaper and you would have gotten your car back quicker.
Melting Slicks
Joined: Jul 2005
Posts: 2,572
Likes: 3
From: Rehoboth MA . . . NRA Life Member
St. Jude Donor '06-'07
Originally Posted by Mike Mercury
exactly what I was thinking. Talk to the service manager and see if you can work out a deal with him.
Same here, I'd go for a complete factory assembled one before some oil change mechanic at a stealership "rebuilds" mine from scratch. Wonder what they'll discover the next time?...
Hey Mike, I like the new hairdo...Color looks great on you...
Race Director
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
Originally Posted by beav626
My dealer found that my pinion bearing was going bad in my rear end a while back. My car has 70k miles and it seems that the previous owner drove it like a vette...
So I wait while the dealer orders parts to rebuild the rearend(All covered under my GMPP plan)
After somtime passes I get a call from the dealer saying that my parts are in. Monday 10-2-06 I take my car in (now the fun begins).
They get everything replaced and road test it on the next Friday. I get a call saying that while they drove it they heard a grinding sound. they open up the rear end and find pieces of metal floating around. The dealer says that the piece they got from GM was deffective and they are going to do a complete rebuild again.
(Car has been in the shop for going on 4 weeks now mainly waiting on parts.)
Friday 10-20-06 I get a call that all parts are in and they will have it complete early next week.
So I wait while the dealer orders parts to rebuild the rearend(All covered under my GMPP plan)
After somtime passes I get a call from the dealer saying that my parts are in. Monday 10-2-06 I take my car in (now the fun begins).
They get everything replaced and road test it on the next Friday. I get a call saying that while they drove it they heard a grinding sound. they open up the rear end and find pieces of metal floating around. The dealer says that the piece they got from GM was deffective and they are going to do a complete rebuild again.
(Car has been in the shop for going on 4 weeks now mainly waiting on parts.)
Friday 10-20-06 I get a call that all parts are in and they will have it complete early next week.
Pro
Joined: May 2000
Posts: 693
Likes: 0
From: Merrick NY
I betcha the stealership F-ed up rebuild.. shimmed it wrong or something. 4 weeks seems a bit long for all that. Since it's under warranty I'd go back as ask them for a whole differential swap instead. U can make the argument that your afraid that after the rebuild got destroyed that your differential might be damaged because of that, and that you would really hate to pull the "lawsuit" card out.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Stopped by the dealer yesterday and spoke to the parts manager (He was the only manager that was avaliable) What he told me was surprising!
The first tech that repaired my rear end did F- up and has been fired from the dealer. Now that all parts are in they have a Master Tech that will do the job right.
they are replacing all internal parts but not the housing. The Housing was not damaged therfore GMPP will not pay to get a new housing...
Does this seem normal or do I have an argument?
The first tech that repaired my rear end did F- up and has been fired from the dealer. Now that all parts are in they have a Master Tech that will do the job right.
they are replacing all internal parts but not the housing. The Housing was not damaged therfore GMPP will not pay to get a new housing...
Does this seem normal or do I have an argument?
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Went by the dealer again today... 4.5 weeks later, and was told the car was back together to GM specs but there is still a whine in the rear end like before(After all new parts) They spoke to the GM Zone manager and was not satasfied with the answer. They are going to get other Corvette Master Techs involved around the city to get a better fix.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Originally Posted by tiojames
I think its time to stop being nice about it and demand a new diff. A factroy assembled one- you have plenty of ammuntion to force them to give you a new one.
Also they will save money and time just replacing the differential...IMO
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Originally Posted by tiojames
I think its time to stop being nice about it and demand a new diff. A factroy assembled one- you have plenty of ammuntion to force them to give you a new one.
Who do I force GM or the Dealer?
The dealer says GM will not pay to put in a whole new diff at this time...
Team Owner
Joined: May 2005
Posts: 23,682
Likes: 9
From: Flagstaff Az.
diff
Originally Posted by beav626
Who do I force GM or the Dealer?
The dealer says GM will not pay to put in a whole new diff at this time...
The dealer says GM will not pay to put in a whole new diff at this time...
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
Got the Car back today... They were not able to completely repair the car. The car drives like a new car with extremely smooth acceleration. However the whine of the rear end is worse. They made an appointment with another dealer to take it too next Monday.
Burning Brakes
Joined: Aug 2006
Posts: 789
Likes: 38
From: Shreveport LA
The dealer will NOT give you a whole new diff. The reason is the housing is not hurt. and it isn't. Theoretically they are doing the right thing by rebuilding it.....IF they had a technician that knew what he was doing, but I can guarentee you that this is probably the first or maybe second corvette rear they have rebuilt. The whole arguement of "it would be cheaper for the dealer if they just replaced it." doesn't fly since the dealer will get paid more from GM since they can bill for man hours also as well as parts, so you are screwed unless you get a 1 in a million dealer that sympathizes with you and just throws profit out the window. I hate to hear that you are going through this and hope everything works out but I doubt it will be an easy road.
Thread Starter
Le Mans Master
Joined: Oct 2005
Posts: 6,503
Likes: 2
From: Oklahoma City OK
WOW... I did not want to read that...
I have a friend that is a service advisor at this new dealer and a better friend that is a miricle tech there too. I am hoping that something positive will come from this relationship with the new dealer...
I have a friend that is a service advisor at this new dealer and a better friend that is a miricle tech there too. I am hoping that something positive will come from this relationship with the new dealer...
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Sad to say it sounds all too familiar to me and to many others here too. 
It's the old dealer "two step". Lie wherever possible. Good luck on getting your problem resolved.
It's the old dealer "two step". Lie wherever possible. Good luck on getting your problem resolved.
Tech Contributor
Joined: Oct 1999
Posts: 41,036
Likes: 9,798
From: Charlotte, NC (formerly Endicott, NY)
Given the low number of differentials that go bad and get rebuilt it is difficult to find any mechanic in the country that has much experience rebuilding them and properly adjusting them to prevent noise. You need to fight for a factory assembled unit. If you don't you could go through this for a while. Rebuilding diffs takes experience and there just isn't much out in the field. My son co-oped in Dana's product development lab about 15 years ago and built 15 to 20 diffs in two weeks to meet a special order. Most mechanics do not see that kind of volume on repairs.
One of the dealer's problems with rebuilding a diff is the fact that it ties up a lift for several days and that means they lose money on other repairs.
Bill
One of the dealer's problems with rebuilding a diff is the fact that it ties up a lift for several days and that means they lose money on other repairs.
Bill
Instructor
Joined: Mar 2002
Posts: 231
Likes: 17
From: Henrico VA
GM Customer Service Works
Danny – It’s time to get GM Customer Service involved (private email w/ phone number to follow). I suggest you have all your facts, service department names and phone numbers and repair history in front of you before you call. Be ready to spend a little time with customer service as they usually call the dealership service manager while you wait.
GM will contact their area rep directly and get the ball rolling toward resolution of your problem. My GMPP has expired, C.S. has come through for me recently. Good Luck. -- Ed:
GM will contact their area rep directly and get the ball rolling toward resolution of your problem. My GMPP has expired, C.S. has come through for me recently. Good Luck. -- Ed: