Mechanics

VIBRATION

1999 GMC Safari • 6 cylinder 2WD Automatic • 140,000 miles

My 1999 GMC Safari 2wd has a vibration I cannot find. At 65 plus MPH vibration felt in seat, go's away when I let off accelerator. Wheels balanced, bearings checked, drive shaft balanced.
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Rmuzio
May 4, 2011.



If it goes away when you are off the throttle, then it's coming from something in the driveline. Check the driveshaft, u-joints, differential and trans tailshaft bearings.

Wrenchtech
May 5, 2011.