Serious vibration at 10-15 mph

[localyokel]

Hi, it sounds like an out of round tire.check for a large lump in the tread area or even a small portion of tread w/ less tread than the rest of the tire.Or rotate tires to see if the problem moves.Or add some extra air pressure to your tires.more pressure makes a bad tire less noticable!If its not the tires at least they will be ruled out! Good luck!!

[ColoradoSilverado]

I tried the tire rotation, it made no difference.

Bert

[ColoradoSilverado]

I looked again today and can't find anything obvious except for a leaking ball joint boot on the small arm that goes from the power steering pump to the steering axle ? Don't know what it is called.

Bert

[kennycu]

Did you ever find out what this problems is? I drove a '99 k1500 yesterday and it had a vibration/humm/grind at 10mph. Sounded like nobby tires at high speed. Reminded me of when my CV joints went on my sedan. Anyway, I don't think it was tire noise at 10mph. Would this lead to Ujoints? Are there CV joints at the wheels like my sedan? It was only at driver's front.

[rrousou]

I'd say you got a set of bum tires that go out of balance due to shifted belts. Had that happen to my truck a while back and tires only had 8000 to 10000 miles on them. Went and bought some Michelin LTX MS. Fixed the problem.

[kennycu]

Thanks for the reply. I'm taking the truck to the dealer and for $40 he'll do a safety inspection and check out what I'm hearing/feeling. Nice truck....'99 LT 90k for $10.5k. Better if there's something more than tires wrong. I drove an '02 yesterday that was smooth as can be...other than the throaty dual exhaust! Nice ride and a lot different from the '99 I'm looking at. If a new set if tires will get to the feel of that '02, then I'm buyin'.

[ColoradoSilverado]

Vibration ? what vibration ?

[kennycu]

Hey Colorado, where was that ujoint from? Looks like you found the problem! Didn't you have somebody look at your truck and found the ujoints ok? The noise I'm hearing is at driver's front and sounds like a CV joint going. I'll get an opinion tomorrow at the dealer.

Thanks for the visual.

[WVSilverado]

After having the bearings go bad on a few sets of u-joints, I've figured out the best way to check them is to drop the drive shaft and then check. Sometimes even when they would be bad, I would get no play in the drive shaft when I'd crawl under the truck and try to check it while it was hooked up. Then I'd assume it was something else and waste time trying to figure it out. If you got vibration taking off, checking the u-joints is usually a good place to start.