SUBJECT: 95 4.3 130,000 VIBRATION

1995 GMC Safari

Subject: 95 GMC Safari 4.3 130,000
Are there any know vibration problems with this vehicle? The van rides perfectly smooth up to 60 mph. At higher speeds the whole van starts shaking. I originally thought it was a tire problem (out of round or out of balance) but all tires have now been replaced. I also replaced all 4 shocks recently. I also checked for loose universal joints. They seem to be fine. This is not a new problem. I have owned the van for 5 years and it has always been like this. I thought the problem would go away when I got new tires.
I have owned 3 Astro vans over the years and they did not have this problem.
Any Ideas or suggestions would be appreciated.
January 18, 2007.

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