vibration on pickup

1998 CHEVROLET CHEYENNE
113,000 MILES • 6 CYL • 4WD • AUTOMATIC
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PAULLEHMAN
  • MEMBER
  • 2 POSTS
enter your question...when I'm driving, and it kicks in highest gear, whichis around 50mph,theres a major vibration, as soon as I let off the gas, the vibration stops,also when I get up to about 70mph it stops
Nov 16, 2010 at 5:31 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 POSTS
Have you checked things such as U-joints, tire balance... Also, does it feel like an engine miss, the trans is slipping... You didn't list the year or if it is 4wd which limits my ability to determine if there could be other things.

Let me know.
Joe
Nov 16, 2010 at 5:35 PM
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PAULLEHMAN
  • MEMBER
  • 2 POSTS
this is a 1998 chevrolet, cheyenne 4x4 6cyl I did check the U-joints, tires , engine sounds fine, trans seems to be shifting OK
Nov 17, 2010 at 3:00 PM
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