1996 GMC Jimmy

Tiny
MTRON60
  • MEMBER
  • 1996 GMC JIMMY
Shakes or Wobbles problem
1996 GMC Jimmy 6 cyl Four Wheel Drive Automatic

On acceleration there is a vibration, stops when you let off gas.
Thursday, February 11th, 2010 AT 4:57 PM

7 Replies

Tiny
TOOOMANYTOYS
  • MECHANIC
  • 513 POSTS
Is it 2wd or 4wd. Check the u joints and driveshaft for damage. The driveshaft may need to be balanced
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Thursday, February 11th, 2010 AT 5:09 PM
Tiny
MTRON60
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I already checked u-joints drive shaft does not appear to be missing and balance weights. Tires are all balanced.

It is a 4wd.

I have not checked trans-mount.

The vibration is on acceleration. Stops when I let off gas starts again when gas is applied.
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Thursday, February 11th, 2010 AT 5:43 PM
Tiny
HOMER1967
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Are you sure it's not a misfire? A u-joint or drivetrain issue would not subside when you let off the gas. Jeff
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Thursday, February 11th, 2010 AT 6:00 PM
Tiny
MTRON60
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It Idles fine and has plenty of get up and go.

It acts similar to a tire being out of balance but subsided/stops foot off gas.

Trans-mount?
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Thursday, February 11th, 2010 AT 6:20 PM
Tiny
HOMER1967
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Trans mount unlikely if anything I would be leaning towards backlash in one of the rears or transfer case. Does the vehicle make any noise when putting it in gear? Especially reverse it would be a clunking type noise. Let me know.
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+1
Thursday, February 11th, 2010 AT 7:56 PM
Tiny
MTRON60
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I found a receipt previous owner

"vibration"
Test drove
Inspected U-joints okay Greased and installed
Removed dirt rims balanced rear tires.

At low speed 20-25 slight clunk when you let off gas.

I plan to put it up on stands Saturday to give it the once over.

Anything I can check or do to diagnose?
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Thursday, February 11th, 2010 AT 8:28 PM
Tiny
2 LINSEY
  • MECHANIC
  • 287 POSTS
We appreciate your donation and look forward to helping you in the future. Thank you
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Monday, March 1st, 2010 AT 4:03 PM

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