Recall for Diff.
Melting Slicks
Joined: Feb 2006
Posts: 3,151
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From: LAS VEGAS NV
St. Jude Donor '08
Burning Brakes
Joined: Jul 2004
Posts: 1,202
Likes: 5
I was paid more than enough for each PDI that I did. There was an extensive list, which I happily went over on each and every car that I PDI'd. Which included all fluids.
If any Corvette left with low fluid, and its actually checkable, then someone didn't do their job...multiple times at multiple locations. And I wouldn't doubt it. PDIs are seen as gravy work, and done asap with as little effort as possible, I'm sure. Also considered by some to be a waste of time and money, when they could be making $ on a better job with more bookable hours. So they whiz thru it, giving it the penci check only.
If any Corvette left with low fluid, and its actually checkable, then someone didn't do their job...multiple times at multiple locations. And I wouldn't doubt it. PDIs are seen as gravy work, and done asap with as little effort as possible, I'm sure. Also considered by some to be a waste of time and money, when they could be making $ on a better job with more bookable hours. So they whiz thru it, giving it the penci check only.
Instructor
Joined: Nov 2005
Posts: 108
Likes: 1
From: West Union SC
Z51 eDiff Noise
I have number 1040 and it pops and bumps significantly while moving around parking lots at slow speeds and turning sharply. I just assumed this was the new normal - but am I hearing that this should not be happening? I will be checking the fluid this afternoon as I have less than 600 miles on the car... 
Supporting Vendor
Joined: Nov 2010
Posts: 3,893
Likes: 652
From: Houston, TX
I don't know if anyone else has seen this but talking to the local dealer there is a possible recall on at least the Z51 cars due to a possible lack of correct fluid level in the diff's.
Could be up to a quart low.
I don't know if this effects all of them or just the Z51 cars but if you have one, check your diff fluid.
Could be up to a quart low.
I don't know if this effects all of them or just the Z51 cars but if you have one, check your diff fluid.
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Quickest and Fastest GEN5 LT Powered Vehicle
LMR1200HP Supercharged C7 8.84 @ 160
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Drifting
Joined: Jun 2007
Posts: 1,425
Likes: 238
From: Macomb MI
I have number 1040 and it pops and bumps significantly while moving around parking lots at slow speeds and turning sharply. I just assumed this was the new normal - but am I hearing that this should not be happening? I will be checking the fluid this afternoon as I have less than 600 miles on the car...
Here are only a couple:
http://forums.corvetteforum.com/c7-g...is-turned.html
http://forums.corvetteforum.com/c7-g...-tire-rub.html
Last edited by xp800; Dec 22, 2013 at 01:18 AM.
Drifting
Joined: May 2000
Posts: 1,760
Likes: 115
From: Tennessee
I picked up my Z51 on 12/19/13 number 7035. I asked the dealer if they checked the differential fluid level and he said oh yes we check everything thoroughly. Well it must have had them worried because when they were cleaning it up they put it back on the rack, I went back and talked to the tech he said it was full and didn't have to add any. I am not sure if they have released a vin break point on this issue? I am glad they checked for piece of mind because I was 457 miles from my house.
Instructor
Joined: Dec 2013
Posts: 186
Likes: 4
This issue reminds me of the CTS-V. Most of them were under filled from the factory. The diff in my CTS-V wagon made the worst whining sound at 8800miles and had to be replaced.
Is GM sourcing their diffs from a dollar store or something?
Is GM sourcing their diffs from a dollar store or something?
Safety Car
Joined: Dec 2006
Posts: 4,642
Likes: 9
From: Dalllas/Ft Worth Area TX
Slow learner!
This is quite interesting on differentials. Not trying to hijack the thread, but GM has been having rear end problems for over 50 years per comments of others in previous threads. My 06 C6 is on its third (3rd) differential. It seems that GM is a "slow learner" about differentials since this has been going on for over 50 years per others! Others have commented that this problem was also on other GM car models.
Racer
Joined: Dec 2013
Posts: 366
Likes: 47
From: Walnut CA
Diff FLuid
Hi all... FYI
My vin is 3872 and I was told my car was affected and brought to dealer for "checking". Did the reflash at the same time. I was told cars built prior to 11/17 ( guessing from memory) need to check
Hope that helps! Thanks everyone for sharing, it has helped me immensely as a new first-Corvette owner
My vin is 3872 and I was told my car was affected and brought to dealer for "checking". Did the reflash at the same time. I was told cars built prior to 11/17 ( guessing from memory) need to check
Hope that helps! Thanks everyone for sharing, it has helped me immensely as a new first-Corvette owner
I call the local dealer and he ask for my VIN. He checked and said mine ( 3385 ) was not effected in the recall and that it is by vin only and no need to have the fluid level checked.
Still, I would feel better if it was checked. I need a shop manual so I can do this stuff myself.
Still, I would feel better if it was checked. I need a shop manual so I can do this stuff myself.
Last edited by 1Bridog; Dec 30, 2013 at 03:15 PM. Reason: adding info...just got done. They added 1 quart to the differential and flash upgrade to the software. all good
Team Owner
Joined: May 2003
Posts: 23,480
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From: East Meadow NY
St. Jude Donor '12
Back in the day I use to be a Factory Trained Corvette Tech, And one of my jobs was to PDI all of the new just delivered Corvettes hot off the truck. And if the car was Ordered or sold it didn't leave the dealership until all fluid levels were checked and topped off even the windshield washer fluid.
I can't believe for a minute any Corvette dealership would let a brand new Corvette hit the street without checking everything out before delivery.
I can't believe for a minute any Corvette dealership would let a brand new Corvette hit the street without checking everything out before delivery.
Ultimately, it is a minor hiccup in the roll out and it seems that GM has notified everyone and is taking care of it.
Racer
Joined: Dec 2013
Posts: 366
Likes: 47
From: Walnut CA
Instructor
Joined: Nov 2005
Posts: 108
Likes: 1
From: West Union SC
There is a recall! My dealer verified this and when he checked mine {#1040} it was about half a quart low. He also said to go out and do a bunch of figure 8s - man I hated to do that but I made the sacrifice and did it anyway. This car really turns fast... Anyway I would get the dealer to check it out, under warranty of course, to document the findings.
Instructor
Joined: Jan 2013
Posts: 175
Likes: 1
From: Ashland Va.
