2011 Tahoe squeaking

[Rummel6]

Just purchased this Tahoe with 178k and one owner with maticulas Maint record I have a squeak it’s coming from the back of the motor and cannot he heard until the motor heats up I have already replaced idler pulley,water pump,tensioner,power steering pump and alternator so there not the problem here is the video

Took it to dealer and they said rear main seal but want over 1600 to fix anyone have any ideas

 

[Doubeleive]

Take the belt off and try spinning the pulleys by hand to find the noisy one, you could also try a set of stethoscope from the auto parts store there cheap. or just use a hollow metal tube as a tip piece and a length of rubber line held to your ear

 

[Fless]

Have you pulled off the A/C belt and checked it without that in place?

 

[wjburken]

I believe on the 2011, you will need a new A/C belt as those are stretch to fit belts, if I am not mistaken.

 

[OR VietVet]

What Wes said, Steve said and Wade said. In over 35+ years in a shop I have never heard a rear main seal make a noise and that noise sounds like up front and not at the rear. One inexpensive tool all owners should have is a mechanic's stethoscope. A few others come to mind but are just a little bit more money but they save time.

 

[Rummel6]

So the dealership removed both belts and noise is still there also I have the metal stethoscope and so confirmed it is coming from the area between the engine and torque converter is located

 

[Rummel6]

Also like I said when the motor is cold no sound has to heat up and above 1500rpm when revving you can’t hear it that why I’m so puzzled on what it is

 

[Rummel6]

Also realized when I changed the oil two days ago there was oil on the back side of the engine around where the filter is so I assume it was loose but it wasn’t had to use tools to get it off now the dealership said there 80% sure it’s a main bearing but not sure to trust them cause they also said I have metal in the oil and I didn’t see anything in the drained oil or on the magnetic tip of the drain plug

 

[OR VietVet]

Look, I get it but I just never heard of such a thing. Doesn't mean it cannot happen but man, that would be a new one on me. Is your oil pressure in the normal range?

So I went searching for another time this has happened. Listen to this video:

This was on a Bronco but sounds the same. I like Fel-Pro if you go this was. https://www.rockauto.com/en/moreinfo.php?pk=447129&cc=3015551&jsn=2290 For the whole kit.

Or a 2 piece AC Delco with this: https://www.rockauto.com/en/moreinfo.php?pk=6437253&cc=3015551&jsn=2291 and this: https://www.rockauto.com/en/moreinfo.php?pk=9838924&cc=3015551&jsn=2293

You could also take apart and shove grease in there, like in the video but you said it was wet with oil back there so I would do the replacement.

It means pulling the trans and torque converter down and removing the flex plate and then the cover. If you have jack stands, floor jack, tools and a mechanically inclined friend and watch 2-3 videos of it, it is not that difficult.

This, like the guy in the video said, is something I have never ever heard of before.

 

[swathdiver]

Just purchased this Tahoe with 178k and one owner with maticulas Maint record I have a squeak it’s coming from the back of the motor and cannot he heard until the motor heats up I have already replaced idler pulley,water pump,tensioner,power steering pump and alternator so there not the problem here is the video

Took it to dealer and they said rear main seal but want over 1600 to fix anyone have any ideas

Sounds like a pulley to me, got louder when you put camera in front and towards passenger side. I would stick the stethoscope right onto the moving pulleys and have a listen. One time I melted a piston in a drag race and it sounded similar though higher in pitch. Start with the simple stuff!

 

[OR VietVet]

Dealership removed both belts and noise was still there? Same dealership that said the rear main seal was the noise? Same dealership that switched that to rear bearing? Were you standing there when the noise was still there when both belts off and engine was running?

 

[Rummel6]

No unfortunately I’m out of town for work yeah not to confident in them so far

 

[Rummel6]

Just talked to them so there saying it’s the main bearing that’s causing the noise but besides the squeak the motor runs very smooth I’m just gonna have my buddy look at it and let me know what it is

 

[OR VietVet]

I would not let the dealer tear it down yet. Good that the buddy is going to look at it. Personally, I would not have let the dealer look at it while you were out of town. No way for you to be there for proof. Too many shady stories on this forum about dealers and some of their techs.

 

[Rummel6]

Yeah guess I have to eat 300 but I can guarantee if it’s not what they said I’ll be hitting them in small claims court for that money back and lying

 

[OR VietVet]

Keep us all informed as to what happens on this after you get back in town. I am really interested in this thread.

 

[Rummel6]

So my buddy that builds race motors verified it’s a bad lifter that’s going bad so guess we are tearing it town he said where gonna do lifters and a cam also any suggestions

 

[OR VietVet]

So, went from a rear main seal and rear bearing squeak to a lifter squeak? Correct? How did he verify that? I am in no way doubting his diagnosis but I am very curious about how he came to that decision.

 

[Rummel6]

So he started in the rear where the dealership said the noise was coming from and disconnected the flywheel to verify if it was the engine or trans sound was coming from engine then pulled the covers and started tearing it down can’t remember if he said it’s collapsed or it turned I know he said I need new lifters and possibly a cam hasn’t got that out yet

 

[OR VietVet]

Ok, a collapsed lifter noise and the squeak noise are vastly different from each other. I HOPE it fixes the noise but I am still very curious about this. What do you mean by "collapsed or it turned"? What did he say was the reason for needing new lifters? If I was keeping the rig I would do the cam at the same time as the lifters anyway.