Mechanics

CHEVY , VIBRATION OVER 65 MPH

1999 Chevrolet Blazer

I have a 1999 Chevy s-10 blazer. 90,000 miles, 4X4, automatic transmission. Runs and drives great, up to about 65 mph, when I get a very very noticeable vibration. Can't really tell if it is coming from a specific area or not, just kind of feels like the whole thing is shaking. I tried swapping out wheels/tires from a friend's blazer and the vibration is still there. Any suggestions? I am on a limited budget, so I want to know the best thing to try first before spending dollar after dollar guessing what it might be.
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Lonnie92071
September 27, 2007.




You might want to look at the engine and trans mounts closely. Make sure they are not broken, collapsed, or excessively " spongey" from oil saturation. You could also find a shop that has an ELECTRONIC VIBRATION ANALYZER. The E.V.A. Can pinpoint the source of vibrations by measuring their frequency.
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Dennyp
Sep 28, 2007.
Try removing the forward drive shaft. It worked for me but I haven't determined what the true source of the problem is so I can re-install the drive shaft. The problem was the u-joint at the forward end of the drive shaft.

Tiny
Deanjb
Nov 15, 2007.
Check the drive shaft, I had the same problem and the vibration got so bad I thought parts were going to fall off, it ended up being the U joint on the back end of the drive shaft.

Tiny
Ihatedahabs
Nov 27, 2007.

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