2008 GMC 3500

Sparktrician · Mar 1, 2016

My service truck has a vibration from 20-
25 mph. Feels like driving over rumble
strips, maybe not quite that extreme
though.

Truck has about 190K, Allison w/o duramax.
Drive shaft had all new universal and
carrier bearing less than 4K miles ago.

Ideas?

Mike M · Mar 1, 2016

Don't go that speed ? LOL
Wonder if it is a tire issue ?
I chased a weird noise in my Dodge once turned out to be the differential side bearings. I put it up on jackstands and ran it and started unhooking things until it went away.

dhermesc · Mar 1, 2016

I'd check you "new" universal joint and carrier bearing.

tomturkey · Mar 1, 2016

Check inside the rim. May have gotten some snow? mud up in there. gobble

casenut1 · Mar 1, 2016

Check the tires. Wife's van had a shimy, I kept checking the steering linkage, everthing was tight. The belts in the tires were coming apart. New tires fixed it.

J.Wondergem · Mar 1, 2016

You might want to check and see if your drive shaft is timed. Sometimes they don't get the universels lined right.

2underage · Mar 1, 2016

I agree. My SIL bought a used truck a few days ago and when driving it he noticed a slight vibration. He thought it might be a bad u-joint but the next morning he found a flat tire on the truck and when he installed the spare the vibration was gone.

Steve@Advance · Mar 1, 2016

That is the typical speed for drive shaft problems. Might take a look at it, see what's happening before it lets go.

2008 GMC 3500

Sparktrician

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Mike M

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dhermesc

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tomturkey

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casenut1

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J.Wondergem

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2underage

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Steve@Advance

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