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NV4500 Rattle/Grinding Noise

Coop8202
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Coop8202 Enthusiast

Coop8202

Posted
Posted

Hey guys. 2001 Silverado 2500HD

Sounds like a bad bearing or something. 97k miles. NV4500

Hear it most prominent in 4th/5th gear but can hear faintly coasting in neutral.

 

Also, it does the noise in every forward gear. Gets most noticeable at 40 mph + and 5th gear REALLY picks up the noise way worse than any gear. I threw it in neutral going about 50. Still heard it. And then pressed the clutch in at 50 in neutral. Still heard it. Could this be an issue with the driveshaft or something ? However, 5th gear amplifies the noise and it sounds like it is coming directly from the shifter. So I think it would have to be trans related. I’m stumped

 

Link to video: 

 

davester Senior Enthusiast

davester

Posted
Posted

Put the rear end up on jackstands, run it, and use a mechanics stethoscope to narrow down where the sound is coming from.

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