Reminds me of the flex plate breaking up on my 91.
Jim, 91 Dak 318LA
>
>
> > -----Original Message----- > From: Rick Suter > > >>but I still have a
>nagging groan/vibration. It seems to be around TC > >>lockup, but I'm not
>convinced the two coincide. Most obvious around 60 > >>MPH on the highway
>with light pressure on the gas... It's sort of a > >>groan/rumble with mild
>vibration. It seems to lessen as the truck warms > >>up. Worse in colder
>weather. Ideas?<< > > >Stock ride height? > No, has had 2" add-a-leafs in
>the rear since I've owned it at 16K miles. >
>
>Have you checked your u-joints....on both ends of the driveshaft?
>
>Ray
>
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