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  1. #1

    Default 2004 silverado front end vibration

    OK, I am trying to chase a vibration coming from the front driver's side suspension/drivetrain. It is cyclical in nature, with it being worse around 40-45 mph. I have changed the front axle seals and the axle bearings. The vibration still persists. I have looked at the CV axle, and it appears ok. There is no "clicking," as I have heard that the CV joint will "click" with rotation. The rotors do not appear to be warped (no pulsation in braking). My thought is that it is likely the wheel hub bearing. I just bought the CV axle and the wheel hub bearing, and will use which is needed and return the other. What I am hoping to see is if anyone else has had the vibration issue, and if you have any insight on what we are missing here...

    Thanks in advance guys...

    2007 Silverado LT Z71 4x4 Crew Cab
    Dark Metallic Blue

    Mods to come, just purchased on 10/31/09

    Go Pack Go!

  2. #2

    Default

    This may be a stuipd question but are the wheels balanced?
    Ryan

    2002 Jeep Wrangler Sport 4x4 (the Yellow Jacket)
    4inch suspension 3inch body
    Straight 6 (383 Stroker within a year)
    36inch SuperSwamper TSL.
    105,000
    Detroit Loccers
    Daily Driver Weekend Wheeler
    much more...

    2004 Sierra crew cab, 2wd, 5.3 V8
    2inch Daystar Leveling kit
    single dumped Flowmaster 40 sieries exaust(removed)
    Mb Blitz Chrome wheels
    Leer Bed Cover(for sale)
    50k miles
    :glasses:




  3. #3
    Master Mechanic
    Join Date
    Oct 2008
    Location
    Brandon, FLA
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    747
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    Default

    04's right, did you swap rotate the tires from rear to front and see if it still persists? Hit a curb or something? Were you off roading with the truck and hit something, Just Checking with the obvious?
    How are the torsion bar bushings? Anything with the lift kit?

    jeff
    JMoney02

  4. #4

    Default

    Yes, the tires have been balanced (twice), and they have been rotated. Bushings, and everything appear ok. Gut feeling is that it is something rotating, as it increases with speed.

    Thanks for the ideas guys.

    2007 Silverado LT Z71 4x4 Crew Cab
    Dark Metallic Blue

    Mods to come, just purchased on 10/31/09

    Go Pack Go!

  5. #5

    Default

    That and the "drag" felt on the wheel when spun by hand...

    2007 Silverado LT Z71 4x4 Crew Cab
    Dark Metallic Blue

    Mods to come, just purchased on 10/31/09

    Go Pack Go!

  6. #6
    Jr. Mechanic
    Join Date
    Dec 2008
    Location
    Gettysburg, Pa.
    Posts
    103

    Default front end vibration

    Along with the tire balancing did you have the symmetry checked (Are the tires truly round? Are the treads true and don't waiver back and forth as they rotate?) Are the shocks OK? Does the vibration change when driving a long curve (left or right) at these speeds ? Is the brake caliper releasing well?
    A few years ago I was chasing a vibration that seemed like it was comming from the front passenger side. I spent days trying to find it. It seemed to happen at about 40-45mph. I noticed it only happened when the torque converter locked out. Then after all this time the check engine light started to come on. I had a p0300 code and soon found out it was the intake gasket, so what felt like a vibration turned out to be a misfire which I guess wasn't bad enough at first to trigger a code.

  7. #7

    Default

    So I tore the front end apart, and it did end up being the wheel bearing/hub assembly. I was amazed at the amount of drag present before replacing the bearing. I actually lost 1.5 mpg fuel efficiency, and had issues with my ability to "coast" when up to speed. I guess that it came on so gradually, that I didn't really notice it until the vibration came on.

    Anyways, the bearing was shot, so it has been replaced. I am back to my 17mpg efficiency, and no vibration. WooHoo!!

    2007 Silverado LT Z71 4x4 Crew Cab
    Dark Metallic Blue

    Mods to come, just purchased on 10/31/09

    Go Pack Go!

  8. #8

    Default 02 silverado 4x4 virbration

    I have an 02 silverado, 98k miles, I just added a 3 inch (more like 2) torsion bar/key leveling kit to the front end. I just bought this truck in the summer and today, we had our first snow and I noticed a substantial vibration felt throughout the cab while in 4wheel drive (doesn't happen in 2 wheel) at about 30 mph. Any ideas? i'm thinking alignment but am not positive. Thanks

  9. #9

    Default

    Quote Originally Posted by dhead View Post
    I have an 02 silverado, 98k miles, I just added a 3 inch (more like 2) torsion bar/key leveling kit to the front end. I just bought this truck in the summer and today, we had our first snow and I noticed a substantial vibration felt throughout the cab while in 4wheel drive (doesn't happen in 2 wheel) at about 30 mph. Any ideas? i'm thinking alignment but am not positive. Thanks
    I have a 97 Silverado. Did the exact same thing to it and the exact same thing happened. Had to change a pitman arm and got it aligned. Never hapened again.

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