GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Baffaled with noise

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Old Sep 23, 2012 | 09:03 PM
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From: JunkYard
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Does the sound follow when you rev it??? Maybe the crank pulley???
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Old Sep 23, 2012 | 09:05 PM
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Pat Im all ears at this point... you think oil pump could make noise? Damb I got to get a video asked my buddy and his wife washed his Iphone last night.
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Old Sep 23, 2012 | 09:07 PM
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Originally Posted by 1FastBrick
Does the sound follow when you rev it??? Maybe the crank pulley???
Yes it does but faint, that crossed my mind today also, you think balancer could go bad? Its pinned by the way.
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Old Sep 24, 2012 | 12:01 PM
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Do you run the dust cover on your tranny? If you do, I would remove it and start it up listening for anything while you are down there. Maybe you could even take out the converter bolts, slide the converter back, and see if the noise continues.
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Old Sep 24, 2012 | 08:07 PM
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Here is a video. Forgot to rev it but drove about 40 miles with it didnt fell anything strange. In video i do notice my vacuum is higher than normal like 18 instead of the usual 15. I had also emptied the oil catch can and you can see it has about a teaspoon of not oil but water? Its been raining alot here but truck has been sitting only run for 5-10 minutes at a time maybe collecting condensation from not driving it enough since first noticed the noise.
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Old Sep 24, 2012 | 08:32 PM
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It kinda sounds to me like its coming from the trans / converter area. Not sure its hard to tell from a video, also not used to procharger noises so it took me a second to decipher the two different sounds.
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Old Sep 24, 2012 | 09:52 PM
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Try bypassing that oil seprator and see if the noise changes. What's the air filter cone looking thing by the driver exhaust???
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Old Sep 24, 2012 | 09:59 PM
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Broken piston.
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Old Sep 24, 2012 | 10:03 PM
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Originally Posted by 03sierraslt
It kinda sounds to me like its coming from the trans / converter area. Not sure its hard to tell from a video, also not used to procharger noises so it took me a second to decipher the two different sounds.
Used a mechanics ear, pretty cool its electric with headphones and hear the noise when I place it on block,bell housing,and even open the oil filler so who knows. next going to check converter bolts...

Originally Posted by 1FastBrick
Try bypassing that oil seprator and see if the noise changes. What's the air filter cone looking thing by the driver exhaust???
I will try that but its been there for few years no problems I even pinched the hose and noise still there. Haha prochargers air filter location.
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Old Sep 24, 2012 | 10:05 PM
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Originally Posted by Gadgetized
Do you run the dust cover on your tranny? If you do, I would remove it and start it up listening for anything while you are down there. Maybe you could even take out the converter bolts, slide the converter back, and see if the noise continues.
Is there room in there to pull bolts out and run it?
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