Mechanics

WHIRRING/WHINNING 99 AWD 4.3 FRONT END 200K.

1999 GMC Safari

I was told it was my alternator making the noise and it would fail within two months, so I changed it with no difference at all.
Could it be something with my transfer case? The noise speeds up with engine speed if in gear.
Also, noise barely audible outside of cabin but much louder inside.
And for some reason my gas gauge seems to be vibrating?
Any help would be great thanks.
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Daddyman
September 24, 2007.



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