weevy

Hello, it has been quite awhile since I have been on the forum. About 7 yrs. I finally pulled the trigger on a new Arctic White Adrenaline Red Interior. 7 Speed Manual. Had 23 miles on odometer. Got from dealer and added 200 more miles. After parking in driveway I noticed grease spots in driveway. Leaking pretty good. Took back to dealer, and he stated the gasket had been damaged during production. I am not a mechanic, so am asking, could the rear end been damaged by this. It almost smelled like the grease had a burnt smell.

The dealer said alot of the diff oil was still in the pumpkin. What should I do to protect myself and my purchase? Should I notify Chevy!!! Really concerned about this. Paid $68000 3lt package. Love the car.


Any help would be greatly apppreciated. The dealer is here in Iowa

I am somewhat bummed that it seems that car mfg. is really becoming a roll of the dice

weevy

Also dealer stated he didn't have the part. Would need to order.

Red C8 of Jax

I just had my rear diff replaced under warranty, no leak, just making high shrill sound. You might keep and ear out for yours. I have 30K on my car. I asked the service writer what would be the costs of the replacement of the rear diff if it was NOT covered by warranty. The rear diff (which included the axle) would be 4K and labor would be 2K.

Foosh

The diff is covered by a 5yr/60K powertrain warranty. Get it fixed and don't worry about it.

Diff problems are rare on these cars, and there is no inherent weakness in the design, but manufacturing defects in a very small number of parts are always possible on any vehicle.

BlueDevilZ51

Most likely just needs the seal replaced, just have it fixed under warrenty.

blackmagicZ

[QUOTE=Foosh;1595508886]The diff is covered by a 5yr/60K powertrain warranty. Get it fixed and don't worry about it.

J.Moore

Yes, you truly have a life changing problem. You buy a new Corvette with a warranty and see a leak. Then come on this forum and ask what you should do?

Think of the poor people in Texas that have real life changing problems.

Maxpowers

I wouldn't worry about this too much. Your dealer is offering to fix under warranty - I'd do that.

DWRAT

Diff oil always smells bad.
Nothing at all to worry about, just get the leak fixed.

blackmagicZ

We all feel heartbroken for the people in Texas and have done what we can to help, but this guy just wanted to post on the forum. It's a new car for crying out loud that came with a warranty, so use it.

Let's just pray for those people in Texas and not compare their problems with with this kind of stuff.

yeller z06

I don't see what the issue is here - it's under warranty, just get it fixed and move on.

If you have issues with the diff down the road, you've got the history of the leak and repair, so there shouldn't be any big deal getting it fixed a second time. Especially after five years - if something happens, it will happen within a few years.

Just chill. Enjoy the car. It's a car, it's assembled by human beings and sometimes things will happen.

Oh, and yes, that differential fluid is one of the most foul smells that you will experience.

madrob2020

OP, sorry this happened to a new owner who naturally is very proud of his ride. My only concern is the dealer said: "alot of the differential fluid was still in the pumpkin". WTF, so was it 1/2 qt. low 5 qts low, low enough the gearing was not covered (if I understand diffs)? Anyhow, other than a tear down to look for damage, I guess some of the advice of just "keeping a ear out" for unusual noises is the for now solution. They might be able to peek inside with a lighted camera to inspect w/o teardown. Definitely make sure this is very well documented in your service records-"trust but verify"-ask for a printout to keep as well. Sorry for the cheapshots on here-sometimes no one "feels your pain".

Neil Baker

Don't drive it until fixed, don't take any chances. My C6 did the same thing at 14000 miles. Dealer replaced seal between transmission and rear differentail. Never another problem in 75000 mikes!!

Bill Dearborn

Let the dealer fix it under warranty. The diff is built and filled at a supplier's factory. It is possible a gasket was installed incorrectly and any subsequent leak wouldn't show up until the vehicle had been driven enough for the diff to get hot. You have a 5 year powertrain warranty so will be covered for a long time. This is why all new cars come with warranties. New vehicles are subject to infant mortality failures and you just discovered one on your car. With medium usage over the next several years any other ones will show up before the warranty expires. Let the car sit around and not put miles on it then they won't show up until the warranty expires.

Bill

dmaxx3500

just get the dealer to fix it ,its under warrenty

dvilin

Let the dealer perform the repair, save all the paperwork, drive it and enjoy it.

BJ67

Once its on record the that the dealer replaced a bad gasket in the rear end during the warrantee period and there are notations on the work order that the rear was leaking gear oil, you will always be covered for any rear failure due to low oil during the normal warrantee period unless the dealer can prove neglect or abuse. Keep a copy of the dealer repair order.

stevebz06

If you are handy with a wrench, you might check for a loose drain plug or some other place where oil could leak: I found a drip under my car one day and was fearing the worst but discovered the drain plug was finger tight.

767guy

warranty fix, drive, enjoy..........simple

weevy

Would like to give an update to my previous post about the 2017 Grand Sport Adrenaline Red 3lt leaking differential

The car dealer called me today and stated they cannot get the leak to stop at the rear diff. The person on the phone said it may get repaired next week sometime!!! I was not real happy with his vagueness, so called the owner of the dealership and his head of the shop.

They advised me they had contacted GM engineers about the issue. They stated they had installed the new gasket and it is still leaking. The engineers said they want the dealer to send the entire rear axle assembly back to them. He stated this is the first they heard of this, and that they want to check it out. GM is sending the dealer a new rear axle assembly and they are going to put it in.

I guess I don't know what to say about this. It appears there may have been a bad batch of castings for the differential cover, which is leaking gear oil. GM must want to check it, to see if there are more that is going to crack.

The dealer is going to see if GM will give me a greater warranty than what was given by the factory.

So just wanted to let everyone know what is going on. I have had 4 corvettes before and have liked everyone. Hoping for the best.

Any thoughts on this would be greatly appreciated.Now that everything has changed.

Please keep your rude comments about my car problem, compared to the people who have gone through Hurricane Harvey. It is 2 different scenarios. What those people are going through is bad, I lived through the flood of 1993 where we lost our drinking water etc. So yeah I can be empathetic. So spare me the guilt trip