Problem with Chevrolet 1999 Blazer

moaning noise

I have a 1999 chevy blazer 4x4. I am trying to solve a moan or bearing noise in the front of the vehicle. I just replaced both hub assemblys and noise was still there. We then replaced the output shaft bearing and the pilot bearing. Noise is still there! It starts at about 30mph and disappears around 50mph. Had assemblys rechecked and are fine. What other parts could be causing this? It also feels like grinding in the front firewall also with the noise.

Posted by avatar on Dec 17, 2009

    • By avatarRobert Ulrich May 11, 2010
    • Have you tried rotating the tires to see if the noise changes?

Solutions (1)

has anyone checked the front drive shaft u joints, play in the differentials? differentials would come and go as you accelerated and let off.

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