Question about 1997 GMC Jimmy

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Vibration at 60 mph

Ok I put new tires on the front ( rear was 95%) and drove it off. Now I have a vibration once I hit 62/63 MPH that was there prior. Here is the kicker it doesn't do this all the time it will ride smooth then start the vibration. Now I have taken it back 4 different times and I watched as they zeroed out all 4 tires and the alignment is spot on. They were scratching their heads when I left the last time! So they advised the front end is in near perfect condition but I will need front shocks shortly. So I was thinking could it be the drive shaft out of balance or the shocks please help!

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Not sure but it sounds like you could have a warp brake rotor. The drive shaft is a possibility however you should be able to check it easy enough to see if any of the U-Joints have movement. The only other thing that comes to mind is wheel bearings and they are a little harder to check properly. Good luck.

David

Posted on Jun 21, 2009

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My 1989 Chevey Celebrity started shaking the other day the front part of the car, not like the front end is messed up but it shakes.


Could be a wheel, tire, or axle shaft.
You could rotate the tires front to back and see if the vibration moves.
If it does the problem is one of the tires or wheels.
If it stays in the front, its probably one of the axle shafts. It could also be a hub bearing or something loose in the suspension. But a loose suspension part would normally show up when you hit a bump rather than on a smooth road.

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Most likely a tire/wheel balance issue. The weights that are used to balance the tires can sometimes fall off. Generally how far out of balance it is determines when and how bad it will shake. Unfortunately this is not fixable without a tire balancing machine, has to got to a tire shop.

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You can also try to identify the problem tire by rotating the front and rear tires one side at a time. For example, if the vibration is coming from the front, swap the front and rear passenger side tires and drive the vehicle again. If the vibration moves to the back it's most likely the (now) passenger side rear tire that's out of balance. If the is no change, try the driver's side tires.

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With regards to rubbing noise again hard to diagonisis without looking at the affected tire, probably a splash shield hitting the tire in reverse.
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I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

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