Has anyone experienced this engine noise '21 or '22?

[beefcake83]

I have similar noises on my '22 RST with the 6.2. I can't quite determine what it is, but I'm suspecting the items that have been mentioned. Loose belt or A/C clutch. Although, the a/c clutch doesn't explain the noise when downshifting. It does seem to be getting worse though which is concerning, but it isn't doing it all the time.

 

[Doubeleive]

so...purchase a couple new belts, maybe a different brand than gm and see if it that's it
no sense in having to leave it with the dealer overnight or days at time for that
or try some belt spray.

 

[chrisgiles]

I've got the same noise with my 2022 Z71 6.2. According to the dealer, the noise is the injectors. I do a lot of business travel and have rented a bunch of the current body style (2021/2022) Tahoes/Yukons, and strangely, they have all had the 6.2. I have not had one that has had injectors that are as loud as mine. You can definitely hear them, but they are muted. The dealer tells me that this is normal noise, and that there isn't anything they can do about it. I can guarantee you, though, if someone was to take their $120K Escalade, which has the same engine, in complaining about this noise, they would figure out a way to fix it.

 

[Z7122]

I also have the same noise on my 2022 Z71 6.2. I have noticed when I drive in L9 or below it does not seem to make the noise when coming to a stop. Curious if it has something to do with the DFM.

 

[chrisgiles]

I also have the same noise on my 2022 Z71 6.2. I have noticed when I drive in L9 or below it does not seem to make the noise when coming to a stop. Curious if it has something to do with the DFM.

That's interesting. I'll have to try L9. I assume it shifts through the gears normally, up to 9th gear?

 

[Doubeleive]

That's interesting. I'll have to try L9. I assume it shifts through the gears normally, up to 9th gear?

ya, what makes you think it would not?

 

[JacquesMehoff]

2022 z71 6.2. No start/stop. Same noise here. Also report I haven’t heard it in L9.

I pinned the flapper valve and I still hear the noise.

 

[chrisgiles]

@Z7122 , what is the DFM that you're referring to? I tried L9, and like you, the noise disappears. I am by no means well versed in the technical or mechanical aspects here. I'm struggling to understand why the injectors would make the noise in Drive, but not in L mode. Also trying to figure out how to make the dealer understand and agree to diagnose and correct it.

@Doubeleive , I don't know what made me ask if it would shift through the gears normally. I guess because I had never tried L mode on this vehicle. It was a stupid question, LOL.

 

[Doubeleive]

@Z7122 , what is the DFM that you're referring to? I tried L9, and like you, the noise disappears. I am by no means well versed in the technical or mechanical aspects here. I'm struggling to understand why the injectors would make the noise in Drive, but not in L mode. Also trying to figure out how to make the dealer understand and agree to diagnose and correct it.

@Doubeleive , I don't know what made me ask if it would shift through the gears normally. I guess because I had never tried L mode on this vehicle. It was a stupid question, LOL.

I had a guy that owned a transmission shop try to tell me if it put the automatic in 2nd that it would start out in 2nd

 

[WalleyeMikeIII]

I had a guy that owned a transmission shop try to tell me if it put the automatic in 2nd that it would start out in 2nd

That actually was true in some older 4 speed autos. This 10 speed setup is not that way, from what I understand..