Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

H3 Metal Grinding Noise

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Old Sep 13, 2019 | 07:23 AM
  #1  
Vanishingson's Avatar
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Default H3 Metal Grinding Noise

Does anyone know what this grinding noise is coming from the bottom of the H3?
It happens periodically while driving also the "Service 4 Wheel Drive" alert come on too.
Best way I can describe it is a grinding, winding noise it happens randomly.
Thank You
 
Old Sep 13, 2019 | 12:43 PM
  #2  
Doc Olds's Avatar
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Joined: Jul 2007
Posts: 13,090
From: Boat Town USA MI
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Welcome to HF.

When asking a question Year, Model (Base/Adventure/Lux/Alpha.....) and Miles are important. Since we cannot hear your noise and you can, I would suggest you get under the truck and LOOK around. Check heat shields and brakes.

When was the last time Transmission,Transfer Case and Differential Fluids were changed?
 
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