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On my way home from work to today i noticed a vibration after speeding up and then letting off, I can really feel it in the stick shift... it seem to be not as bad when the hub are unlocked, but still slightly vibrates , any ideas ???
U-joints. Check and grease, see if it goes away or at least seems to quit vibrating as bad. If so, the grease may be a temporary fix, but more likely than not the u-joints are on their way to that big scrap yard in the sky.
On my way home from work to today i noticed a vibration after speeding up and then letting off, I can really feel it in the stick shift... it seem to be not as bad when the hub are unlocked, but still slightly vibrates , any ideas ???
isolate the vibration... put it up on jackstands and run the truck... If it starts vibrating you know it's a driveline problem. Then disconnect the driveshaft and inspect the u-joints if they don't look terrible, run the truck back up to 30-50 mph on the jack stands again and see if vibration persists. If it does you have a clutch/tranny problem. If it doesn't persist you have a drive line proble behind the tranny somewhere.