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-   -   Rattling noise when pulling (https://www.dieselplace.com/forum/63-gm-diesel-engines/365-duramax-fifth-generation-2011-2016-lml/976652-rattling-noise-when-pulling.html)

windy 06-17-2019 07:02 PM

Rattling noise when pulling
 
My engine seems to 'rattle' when pulling at 2500 rpm. If I back off from 2500 it stops. Recently it seems to make the noise only quieter at low speeds even when not pulling - just push on accelerator a bit.
Is this normal? And what is causing it?

windy 06-17-2019 07:03 PM

EDIT: It doesn't happen all the times when at low speeds - just sometimes.

SRex 06-20-2019 11:13 AM

It's probably a harmonic noise from something loose in the exhaust; loose clamp or bolt somewhere. See if you can make it happen not under a load, parked. If you can, it's probably exhaust related, if not it could be a U-joint.

Rvn4me 06-21-2019 09:13 AM

Does this when idling and rev?
When towing our 5er I can’t get over 1800rpm but I only Tow up to 65mph
https://www.dieselplace.com/forum/63...000-rpm-s.html


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