2022 6.2 Tahoe Black Soot

[Purcilas]

I have a 2022 Tahoe with 8k miles and it's leaving a big soot stain on my driveway. I can't park it on my pavers as it damages them.

I have taken the Tahoe to two dealerships now and they tell me "this is normal".

How could this be normal? Am I crazy here? This is not coming from the tail pipe either but from a joint in front of the cat.

 

[B-train]

It's not normal. They need to address the issue. There have been multiple posts about this and its due to the ball-type flange at the cat and y-pipe. Find a new dealership, and take pictures with you to show proof.

Maybe someone here remembers if there was a TSB about this

 

[B-train]

I have the same exhaust on my 2017 and never once has it blown soot put onto the floor. 130k so far

 

[Purcilas]

It's not normal. They need to address the issue. There have been multiple posts about this and its due to the ball-type flange at the cat and y-pipe. Find a new dealership, and take pictures with you to show proof.

Maybe someone here remembers if there was a TSB about this

I showed them the pictures and they insist it’s normal.

 

[Purcilas]

It's not normal. They need to address the issue. There have been multiple posts about this and its due to the ball-type flange at the cat and y-pipe. Find a new dealership, and take pictures with you to show proof.

Maybe someone here remembers if there was a TSB about this

There is a TSB but only for the Duramax engine. I showed them the TSB and they said “yeah that’s not your engine”.

Last time I buy a GM car for sure.

 

[B-train]

Tell them cool, thanks. I'll send the bill for soot removal from my paver driveway that I'd like to be able to park my $80k rig on. Complete BS

 

[Mollys70]

It the leak is coming from the ball-type flange at the cat and y-pipe, I'd think you have some kind of exhaust/emissions factory warranty.
Google review can be your friend.

 

[WalleyeMikeIII]

Go park it on the dealer showroom floor and run it for 35 minutes!

Seriously, instead of taking it in for “black soot” make an appointment for “exhaust leak in front of the catalytic converter”

 

[Purcilas]

Go park it on the dealer showroom floor and run it for 35 minutes!

Seriously, instead of taking it in for “black soot” make an appointment for “exhaust leak in front of the catalytic converter”

I said it was an exhaust leak and its documented like that in the paperwork. They insist it's "normal".
I will try one more time to take it to the dealer as instructed by GM. However, I am already pricing it out for trade in value and looking at BMW X7s. Had a BMW before and never had issues with warranty claims. And you would think this is a simple fix for them!

 

[B-train]

It should be a simple fix. There was something I saw about some sort of high temp tape for the diesel ones. I would assume it would work the same. But, that being said, it sounds like a quality control issue on the manufacturing of the Y pipe.

These new vehicles are a complete joke sometimes. You'd think that a corporation that posts 11.5 billion in profit could spend some money to make quality components.

 

[Bkihum]

I have a 2022 Tahoe with 8k miles and it's leaving a big soot stain on my driveway. I can't park it on my pavers as it damages them.

I have taken the Tahoe to two dealerships now and they tell me "this is normal".

How could this be normal? Am I crazy here? This is not coming from the tail pipe either but from a joint in front of the cat.



View attachment 394942

So I have 2022 Denali and I have the same soot at same location on my garage floor.... Dealer said Oh that's normal ???? That's bullcrap!

 

[Joseph Garcia]

Arrange for a meting with the GM Regional Rep who handles customer issues not resolved at the dealership. That is your next step to resolve issues within the GM system.

 

[Purcilas]

It seems like the same exact problem but they said “nope, this is for diesel engines”

 

[WalleyeMikeIII]

It seems like the same exact problem but they said “nope, this is for diesel engines”

Note, there is a drain hole in the muffler, I believe...which sometimes you get condensation and possibly some soot out of...but this looks worse than that. If you have actually seen it dripping/leaking from the joint in front of the cat-con, take a cell phone video and some pics of it happening...hard to argue w/ that. Then, tell them to put it on the lift, and inspect for an exhaust leak in front of the cat con...if there isn't one, tell them you will pay 0.25hrs labor, if there is one, tell them it should be fixed...

 

[Purcilas]

I will try again. And yeah I can see having a small leak maybe? But this is insane.

 

[B-train]

Try recording a cold start with good lighting and see what you capture. It will be hard to dispute real evidence

 

[B-train]

And cover the area below with white paper

 

[DocDoug]

I have a 2022 Tahoe with 8k miles and it's leaving a big soot stain on my driveway. I can't park it on my pavers as it damages them.

I have taken the Tahoe to two dealerships now and they tell me "this is normal".

How could this be normal? Am I crazy here? This is not coming from the tail pipe either but from a joint in front of the cat.



View attachment 394942

How long are you idling the engine before driving?

 

[Hiebs]

I swear most of these dealerships are useless!

 

[Mollys70]

I swear most of these dealerships are useless!

Well said!