Harmonic Equalizer
Burning Brakes
Joined: Aug 2016
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Op, do you mean the crank pulley? If so, the small squeak will most likely get worse. So will the wobble until it eventually fails. If you had it replaced 6 months ago then hopefully the work was warrantied. Someone with more technical expertise may give you better or different information. Good luck.
Race Director
Joined: Mar 2011
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From: SW Florida
2021 C6 of the Year Finalist - Modified
The OP just has his nomenclature mixed up a little.
When you had the "Harmonic Balancer (HB)" replaced 6 months ago ... Did they replace it with an OEM unit, or an aftermarket balancer?
The OEM HB is prone to failure due to a bad design. Replacing a faulty OEM HB with another OEM HB is just looking for problems down the road.
If it starts wobbling excessively, it will need to be replaced again.
When you had the "Harmonic Balancer (HB)" replaced 6 months ago ... Did they replace it with an OEM unit, or an aftermarket balancer?
The OEM HB is prone to failure due to a bad design. Replacing a faulty OEM HB with another OEM HB is just looking for problems down the road.
If it starts wobbling excessively, it will need to be replaced again.
Race Director
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2021 C6 of the Year Finalist - Modified
Safety Car
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Op, do you mean the crank pulley? If so, the small squeak will most likely get worse. So will the wobble until it eventually fails. If you had it replaced 6 months ago then hopefully the work was warrantied. Someone with more technical expertise may give you better or different information. Good luck.
....LOL
Race Director
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From: Las Vegas NV
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Check the main belt for frayed edges. If so, there is a misalignment or the wobbly HB is causing irregular belt wear on its edges, thus squeaking. If the HB is bad, then unfortunately it failed again. Do not replace with the oem HB! This happened to me and I replaced the HB with an ATI unit and no more wobble or squeaking.
Remove the belt and briefly start up the engine. If the squeak stops, then you know the issue is within the pulley system. Turn off the engine. Spin all pulleys and listen for any squeaking and pull laterally to check for movement on each pulley. If everything checks out fine, but the HB wobbles, then I would replace the HB.
Remove the belt and briefly start up the engine. If the squeak stops, then you know the issue is within the pulley system. Turn off the engine. Spin all pulleys and listen for any squeaking and pull laterally to check for movement on each pulley. If everything checks out fine, but the HB wobbles, then I would replace the HB.
Last edited by Mike's LS3; Oct 29, 2017 at 10:14 PM.
Drifting
Joined: Jan 2014
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From: Jefferson City Missouri
"Harmonic Balancer and Crank Pulley are the same thing"
Well, yes and no. Pre LS, the harmonic balancer was a separate piece from the crank pulley. The crank pulley bolted to the front of the balancer. Now they are a one piece unit incorporating the balancer and pulley.
Well, yes and no. Pre LS, the harmonic balancer was a separate piece from the crank pulley. The crank pulley bolted to the front of the balancer. Now they are a one piece unit incorporating the balancer and pulley.
Safety Car
Joined: Jan 2011
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"Harmonic Balancer and Crank Pulley are the same thing"
Well, yes and no. Pre LS, the harmonic balancer was a separate piece from the crank pulley. The crank pulley bolted to the front of the balancer. Now they are a one piece unit incorporating the balancer and pulley.
Well, yes and no. Pre LS, the harmonic balancer was a separate piece from the crank pulley. The crank pulley bolted to the front of the balancer. Now they are a one piece unit incorporating the balancer and pulley.
Safety Car
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Race Director
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From: Las Vegas NV
Burning Brakes
Joined: Aug 2016
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I had a 2000 C5 with the LS1. Harmonic balancer and crank pulley were one and the same in that engine as well.
