[HELP!] Have you ever heard this metal on metal noise?

[seatown]

Hello,

This past Saturday I just started hearing this noise...

I haven't tried to get a better idea of where it is coming from, but maybe someone has heard it before?

2009 Yukon

 

[avalonandl]

Either the transfer case pump wings or a bearing.....total guess btw

 

[seatown]

Hmmm like this? https://www.tahoeyukonforum.com/threads/how-to-identify-transfer-cases-at-risk-for-pump-rub.101261/

Wondering what bearings are possibilities.

 

[CaptainAmerica1]

That’s what I was thinking. It’d be faster if it was in the motor… gotta be transfer case. Trans would be faster too

 

[seatown]

shouldn't the TC be static when in park?

 

[CaptainAmerica1]

No. It’s always rotating. It’s bolted directly to the flywheel that’s bolted directly to the crank

 

[Geotrash]

No. It’s always rotating. It’s bolted directly to the flywheel that’s bolted directly to the crank

I think they were referring to the transfer case when they said TC. If it were the torque converter, I would agree with you.

I can't tell from the video but I would want a mechanic's stethoscope to pinpoint where that sound is coming from. I can't think of any way that a transfer case would make that sound just sitting in park.

 

[CaptainAmerica1]

Doh! Sorry I’m not used to the 4wd…

 

[CaptainAmerica1]

Torque Converter would be TCC my fault

 

[Doubeleive]

I would start in the engine compartment, take the serpentine belt off, start it up and see if the noise is still there wont hurt anything to run for a minute with the belt off. sounds like a tensioner or pulley to me, if the noise is gone spin stuff by hand to narrow it down. next thing to check if that's not it is to take a rubber mallet and start smacking the cat's and or heat shields.