Help finding Squeaky Pulley
Burning Brakes
Joined: Mar 2006
Posts: 758
Likes: 1
From: Lincoln California
I have an '03 with 9k miles and it just started to squeel when the engine is reved up. It squeels alittle while driving, but under moderate exceleration it squeels louder. What do you think guys?
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Advanced
Joined: Mar 2008
Posts: 86
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From: Katy TX
To me, that sounds more like what I would expect from a bad/wet belt or a weak tensioner.
Drifting
Joined: Oct 2007
Posts: 1,565
Likes: 2
From: The Great Pacific Northwest...........I carry a gun cause a cops too heavy.
[QUOTE=Sunset 05;1572719384] The sound it made didn't sound like a squeal like a wet or loose belt. It was more like a chirp. It wasn't a steady noise, it was rythmic; you could tap your foot to it.QUOTE]
Thats exactly the way I would describe the way mine sounds!
Thats exactly the way I would describe the way mine sounds!
Safety Car
Joined: Sep 2008
Posts: 4,296
Likes: 156
From: Location: Location: kAnSaS
if you got a crayon laying around color up each belt one at a time while the engine is running (dont loose any digits tho) if the sound go's away then theres your problem belt. If it doesnt,,,,then a pulley is in order
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Joined: Mar 2008
Posts: 86
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From: Katy TX
Boy I got lucky!
Car is back, engine is smooth as glass, and all was covered by the warranty.
I'll make a final report in a few days, after I've had a chance to look it over really closely, but so far all is good.
Kudos to Jim *** @ Mac Haik Chevrolet.
Car is back, engine is smooth as glass, and all was covered by the warranty.
I'll make a final report in a few days, after I've had a chance to look it over really closely, but so far all is good.
Kudos to Jim *** @ Mac Haik Chevrolet.
Drifting
Joined: Oct 2007
Posts: 1,565
Likes: 2
From: The Great Pacific Northwest...........I carry a gun cause a cops too heavy.
Glad to hear all is well.
I'm anxiously awaiting you report as I'm still very concerned
.
I'm considering replaceing mine with a quility aftermarket harmonic balancer. I'm just not sure I trust the integerity of the stock one.
I'm anxiously awaiting you report as I'm still very concerned
. I'm considering replaceing mine with a quility aftermarket harmonic balancer. I'm just not sure I trust the integerity of the stock one.
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Joined: Mar 2008
Posts: 86
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From: Katy TX
CH - here's a youtube vid. of another member's car. Mine sounded the same, I just refused to believe (at first) that the balancer had or was preparing to fail.
I got lucky enough that when it went it was covered under warranty, and failed in an undeniable manner. I didn't have any arguement from the Service Writer or Tech about a failed balancer.
hood shut:
http://www.youtube.com/watch?v=4HmMAyPdyDs
hood open:
http://www.youtube.com/watch?v=vRboo9a0RnY&
in the hood open video you can see the runout of the balancer. Mine had less than that, but the squeak was very smilar. Mine was more rythmic...like I said before, you could tap your foot to it, but otherwise the same.
When mine failed the outer ring walked backwards into the engine. It started making a hell of a grinding sound in my driveway, but I shut the engine off ASAP. Dealer said there was no other damage, so I'm grateful for that. I was fortunate it didn't snap a belt or anything else.
Good luck with yours, and hopefully the vid's are informative.
I got lucky enough that when it went it was covered under warranty, and failed in an undeniable manner. I didn't have any arguement from the Service Writer or Tech about a failed balancer.
hood shut:
http://www.youtube.com/watch?v=4HmMAyPdyDs
hood open:
http://www.youtube.com/watch?v=vRboo9a0RnY&
in the hood open video you can see the runout of the balancer. Mine had less than that, but the squeak was very smilar. Mine was more rythmic...like I said before, you could tap your foot to it, but otherwise the same.
When mine failed the outer ring walked backwards into the engine. It started making a hell of a grinding sound in my driveway, but I shut the engine off ASAP. Dealer said there was no other damage, so I'm grateful for that. I was fortunate it didn't snap a belt or anything else.
Good luck with yours, and hopefully the vid's are informative.
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Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
CH - here's a youtube vid. of another member's car. Mine sounded the same, I just refused to believe (at first) that the balancer had or was preparing to fail.
I got lucky enough that when it went it was covered under warranty, and failed in an undeniable manner. I didn't have any arguement from the Service Writer or Tech about a failed balancer.
hood shut:
http://www.youtube.com/watch?v=4HmMAyPdyDs
hood open:
http://www.youtube.com/watch?v=vRboo9a0RnY&
in the hood open video you can see the runout of the balancer. Mine had less than that, but the squeak was very smilar. Mine was more rythmic...like I said before, you could tap your foot to it, but otherwise the same.
When mine failed the outer ring walked backwards into the engine. It started making a hell of a grinding sound in my driveway, but I shut the engine off ASAP. Dealer said there was no other damage, so I'm grateful for that. I was fortunate it didn't snap a belt or anything else.
Good luck with yours, and hopefully the vid's are informative.
I got lucky enough that when it went it was covered under warranty, and failed in an undeniable manner. I didn't have any arguement from the Service Writer or Tech about a failed balancer.
hood shut:
http://www.youtube.com/watch?v=4HmMAyPdyDs
hood open:
http://www.youtube.com/watch?v=vRboo9a0RnY&
in the hood open video you can see the runout of the balancer. Mine had less than that, but the squeak was very smilar. Mine was more rythmic...like I said before, you could tap your foot to it, but otherwise the same.
When mine failed the outer ring walked backwards into the engine. It started making a hell of a grinding sound in my driveway, but I shut the engine off ASAP. Dealer said there was no other damage, so I'm grateful for that. I was fortunate it didn't snap a belt or anything else.
Good luck with yours, and hopefully the vid's are informative.
Drifting
Joined: Oct 2007
Posts: 1,565
Likes: 2
From: The Great Pacific Northwest...........I carry a gun cause a cops too heavy.
Sunset 05 - The videos are interesting. In the first I would say mine has a more rythmic, consistant chirp more like what you previously described. It looked to me in the hood open video that the crank pully had more wobble or runout than what I'm seeing with mine.
Thanks for posting the videos. I to have a hard time wraping my head around the idea that I have a bad balancer but I just don't think its something I should ignore.
Thanks for posting the videos. I to have a hard time wraping my head around the idea that I have a bad balancer but I just don't think its something I should ignore.
Thread Starter
Advanced
Joined: Mar 2008
Posts: 86
Likes: 0
From: Katy TX
Something else you might try to help - pull the belt off and spin the pulleys by hand. All of mine were quiet and well lubricated. The alternator was a tad louder, but nothing serious. Might help you if you find out the alternator or waterpump is the culprit.
[edited to add] pulling the belt off is pretty easy. Just a 14 or 15mm socket (don't remember which one off the top of my head) to hold the tensioner back and then slip it off the water pump pulley [/edit]
[edited to add] pulling the belt off is pretty easy. Just a 14 or 15mm socket (don't remember which one off the top of my head) to hold the tensioner back and then slip it off the water pump pulley [/edit]
Last edited by Sunset 05; Jan 13, 2010 at 12:52 PM.
Drifting
Joined: Oct 2007
Posts: 1,565
Likes: 2
From: The Great Pacific Northwest...........I carry a gun cause a cops too heavy.
Something else you might try to help - pull the belt off and spin the pulleys by hand. All of mine were quiet and well lubricated. The alternator was a tad louder, but nothing serious. Might help you if you find out the alternator or waterpump is the culprit.
[edited to add] pulling the belt off is pretty easy. Just a 14 or 15mm socket (don't remember which one off the top of my head) to hold the tensioner back and then slip it off the water pump pulley [/edit]
[edited to add] pulling the belt off is pretty easy. Just a 14 or 15mm socket (don't remember which one off the top of my head) to hold the tensioner back and then slip it off the water pump pulley [/edit]
) I'm going to get serious about diagnosing, but I have a bad feeling.
Racer
Joined: Nov 2007
Posts: 484
Likes: 1
From: Long Island, NY
…here's a youtube vid. of another member's car.
hood shut:
http://www.youtube.com/watch?v=4HmMAyPdyDs
hood open:
http://www.youtube.com/watch?v=vRboo9a0RnY&
hood shut:
http://www.youtube.com/watch?v=4HmMAyPdyDs
hood open:
http://www.youtube.com/watch?v=vRboo9a0RnY&
I KNEW it was the harmonic balancer/crank pulley all along but it had to get ridiculously worse over time for them to finally do anything about it. I went to several different GM service shops. Even drove HUNDREDS of MILES back to where I bought the car (Kerbeck in Atlantic City, NJ) where they flat out refused to fix it (amongst other things! Things that have now been fixed by a great service shop under warranty, go figure!).
I finally found a highly recommended service shop in my area (on here, thank you CF!), but even they wouldn't replace the HB initially. They replaced the main serpentine belt, but that didn't do the trick. Once they finally agreed to replace the HB after hearing now bad the car sounded, the car now runs as it should; perfectly smooth, no more chirping idling noises, the balancer runs almost dead true, etc.; it's like a whole new car. I wish you guys could have heard what it sounded under acceleration... it was a bird chirping fest under the hood but the idling in the garage under the car gets the undeniable point across that there was a problem, and it's name was "Harmonic Balancer".
Drifting
Joined: Oct 2007
Posts: 1,565
Likes: 2
From: The Great Pacific Northwest...........I carry a gun cause a cops too heavy.
SweetBlue - I thnk I'm in about the same place you were in the early stages, I appreiciate your input. I am just now considering ordering a aftermarket, solid steel HB W/the pinning kit and just doing the install myself just to avoid the frustraction of what you went through at the GM dealers. I will of course pay for this myself but I will at least know that the parts used are the best quility and the installation will be correct, "the first time".
Also considering a 25% underdrive HB. Just wondering what advise someone with a 25% under HB would give me about using one of these instead of a stock size? My LS2 is pretty much stock except for a tune and exhaust and I don't track my car.
Also considering a 25% underdrive HB. Just wondering what advise someone with a 25% under HB would give me about using one of these instead of a stock size? My LS2 is pretty much stock except for a tune and exhaust and I don't track my car.
Advanced
Joined: Jan 2008
Posts: 77
Likes: 0
From: Auburn WA
This is exactly what I’m thinking about doing as my HB has a slight wobble. I’m a couple thousand units out of the affected VIN range, but I don’t want to take any chances. I have 25,000 mi on the car right now.
Burning Brakes
Joined: Oct 2006
Posts: 787
Likes: 127
From: Connecticut
My 2006 Impalla SS sounded exactly like that. I thought it was the waterpump and waisted $45. Do you have a stethoscope? Thats how I found out and replaced the pulley was making the racket.
http://www.harborfreight.com/cpi/cta...emnumber=41966
http://www.harborfreight.com/cpi/cta...emnumber=41966
Thread Starter
Advanced
Joined: Mar 2008
Posts: 86
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From: Katy TX
I kept thinking I would be safe since I was outside the VIN range.
SweetBlue - is your car a manual? Mine is and I wonder if that isn't part of the problem.
Advanced
Joined: Jan 2008
Posts: 77
Likes: 0
From: Auburn WA
Sunset 05 - Thank you! Now that you mentioned it, I realize this is a different type of failure. I'm going to expedite the aftermarket HB install.
Instructor
Joined: Dec 2009
Posts: 222
Likes: 3
From: Herndon Virginia
