4wd Grinding Noise

By troutbum11
January 20, 2011 in Ask A GM Technician

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troutbum11

Posted January 20, 2011

When i put my truck in 4WD there is awful grinding noise coming from the front...Sounds like its coming from the front tire are although i cant be certain...But its coming from the front for sure. Ive changed all my fluids, no metal shavings in anything....levels are always maintained. Not sure what this could be, dont even know where to look at this point....

I probably only use 4wd 5 times a year and only for a short period....

Anyways, if anybody has any clue please point me in the right direction...

Its a 99 gmc 1500 z71

Thanks!!

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