[wrankin]

Originally Posted by davet435

I'm curious if this is a problem isolated by date. Mine was built 2/18. How about y'all?

My build date was 2/27/2016

[Slem]

Originally Posted by keon718nyc

Getting a weird tire type rubbing noise when its cold or just starting to drive and i turn mainly left. Goes away after a bit of driving so i thought it was the one of the rear tires at first. I hear the sound coming from the rear passengers side. Looks like i will have to bring it in to see what the story is but it seems to me like what has been talked about here :( Also mine was built before 2016 so no clue if its isolated to cars before a certain build date.

That's your differential

[ClaunchOfficial]

*follow* contacting my dealer. having same issues with my car since I got it.

[davet435]

Originally Posted by ClaunchOfficial

*follow* contacting my dealer. having same issues with my car since I got it.

Yours was doing it when you got it??? What is the build date?

[ClaunchOfficial]

Originally Posted by davet435

Yours was doing it when you got it??? What is the build date?

Wanting to say 11/15 on the build. It started like a brake drag on initial turn in the morning. As of this morning it's like metal on metal for 7 or 8 turns that was around 8 miles or so. Didn't pay much attention until a few months ago it's either in worse shape or the cold really effects or more.

[SliverATX]

When the weather got a little cooler around 1500 miles I got the groan. Any turning groaned until the gear oil warmed up. I swapped out the gear oil for Valvoline full synthetic LS gear oil. I had very dark oil with a lot of flakes and the magnetic plugs were holding a lot. I ran this way for a week and the groan got worse. Then I put in the ACDelco gear oil 88862624 and the groan cleared up.

[BlueCamaro6]

Build date 2/2016 - new diff on 10/19/2016 already chattering.

[brutusvk]

Well, after almost 11k miles I have the rear diff rubbing noise when cold. Guess to the dealer I must go.

[davet435]

So that's at least 3 months production. I find it hard to believe they would have been using contaminated fluid for 3 months. I think we all know by now contaminated fluid wasn't the problem. I'm patiently waiting for a recall. In the mean time I'm a little concerned taking any road trips in the car.

[wrankin]

Originally Posted by wrankin

I started hearing the noise coming from the rearend a few weeks ago as the weather was getting cooler. It would happen the first thing in the morning after sitting all night. It sounds like a bearing, growl or rubbing noise and happens with a slow left turn while going around my cul-de-sac. The dealership was unable to duplicate it and returned the car to me. I saw this thread and read everything here, called the dealer last week and mentioned it. He took some notes, and was going to check into it. I was surprised today when they called and wanted me to bring it in so they can change the rearend fluid. I'll update everyone on the results in a few days. Thanks to everyone for their contribution.
Bill R from Perrysburg

Originally Posted by wrankin

My build date was 2/27/2016 and mileage is about 14,400

Originally Posted by wrankin

The dealership was able to duplicate the noise this time. They changed the differential fluid with Genuine GM Differential Lubricant part number 88862624. I heard the noise pulling out from the dealership and turning left.
I think I'll try the figure 8 break-in method and report back back with good or bad results.

The dealer performed the fluid change. I did about 25 figure 8s yesterday - the break-in procedure I saw in this thread. I'm still hearing the noise, but it is not as severe. The car goes into winter storage soon - I may need to wait until spring to followup with the dealership.

Build Date: 2/27/2016
Current Mileage: 14,800

[SSport16]

I think that there will be a recall too, don't think new fluid is the answer, hence why I am also patiently waiting before bringing my car into the dealer, isn't worth the aggrivation, hate bringing my cars in at all.

[keon718nyc]

Originally Posted by SSport16

I think that there will be a recall too, don't think new fluid is the answer, hence why I am also patiently waiting before bringing my car into the dealer, isn't worth the aggrivation, hate bringing my cars in at all.

I kinda feel you on that one. I have a passengers recline seat broke from months ago and i hesitate to bring it and now the noise from the diff is just sounding worse so i have no choice really Ahhhh the dreaded dealers! One of the problems bringing it into the dealer is unless you drop the car off the night before and they drive it cold from the start they will not hear this diff noise. So i would think it would be a 2 day ordeal no matter what unless you are in the middle of nowhere with a non busy service department...

[SSport16]

Originally Posted by keon718nyc

I kinda feel you on that one. I have a passengers recline seat broke from months ago and i hesitate to bring it and now the noise from the diff is just sounding worse so i have no choice really Ahhhh the dreaded dealers! One of the problems bringing it into the dealer is unless you drop the car off the night before and they drive it cold from the start they will not hear this diff noise. So i would think it would be a 2 day ordeal no matter what unless you are in the middle of nowhere with a non busy service department...

Yeah if mine gets worse I will bring it in, but such a PITA to bring to the dealer, hassle...and then trying to get them to understand the issues, understand how picky I am with my car, then getting the car back dirty with hands prints all over it. Then have to sometimes argue about getting a loaner when it is left for a while, so yeah I try to avoid them like the plague, lol!

[BlueCamaro6]

My diff was recently changed and chatter is back within one month, so even changing the diff doesn't fix the problem it seems. The temps were warmer when I picked it up, but I hear it leaving my house from a heated garage for the past two weeks. Car shows 59 degrees when I start it and that's not very cold.

I want to do some performance mods, but not looking for gm to use that as an excuse for their problem.