NOISES FROM DRIVE TRAIN?

1999 GMC

Tiny

rgbarnum

May, 4, 2008 AT 7:30 PM

Noises problem
1999 Other GMC Models V8 Four Wheel Drive Automatic 230000 miles

My 99 GMC Suburban is making a howling sound when I accelerate. I have just changed the ujoint to fix one problem and both front and rear differentials are leaking as well as the transfer case. I know I need to replace the seals, but can not isolate the howling sound. It does get a lot quiter when I stop accelerating.

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