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Car: 2007 Pontiac G6 (3.5L engine)

Problem: Front-end vibration

Details:

  • I feel the vibrations primarily in the steering wheel. However, I also slightly feel it in my foot resting on the gas pedal and floor and ever so slightly in my seat.

  • The vibrations start around 20-30mph but continue through at least 80mph

  • I feel it while going straight and also while turning.

  • There is no sound (humming, banging, etc); just the feeling of vibration.

  • Braking doesn't seem to worsen or fix the issue.

What could be causing this?

Notes:

  • I just replaced the wheel hub/bearing on my front right wheel.

  • I've quadruple checked the lugnuts -- they're tight on both front wheels.

  • I think my front right brake caliper is stuck, but I do not think this is the source of my vibration because the pads are not smoking or burning, so could it really be dragging that badly??

  • tires appear to be in good shape with relatively even wear. (Nothing suspect).

My Thoughts:

  • Since the vibration is constant at most speeds, it seems unlikely to be a wheel balance issue.

  • I don't think it's a wheel hub issue because I also don't hear the growling/humming sound I heard when the old one went bad.

    • However, the vibration only arose after my work on the right wheel hub, so I wonder if I screwed something up??? (Seemed to simple to screw up).
  • CV joint also seems unlikely due to a lack of "clicking" on sharp turns.

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  • Are you sure you didn't throw a wheel weight on the front of the car? It happens, and will certainly give you a vibration.
    – JPhi1618
    Oct 27, 2017 at 18:40
  • Lots of things this could be. You said you replaced the wheel hub/bearing. Are you saying that the vibration was NOT there before that? Does the vibration get worse with speed? Or stay the same? When was the last time the wheel/tires were balanced? Just because CV joints don't "clink" doesn't mean there isn't anything wrong.
    – CharlieRB
    Oct 27, 2017 at 18:41
  • @JPhi1618 I only assumed it wasn't a wheel balance issue because the vibration doesn't "come and go" as I increase speed -- which is typically how a balance issue manifests. Oct 27, 2017 at 18:58
  • @CharlieRB I realize this could be lot's of things. I cannot be sure about the vibration not being there before replacing the wheel hub because of the vibration the hub was making. I can be sure, though, that if it was there it was never as noticeable as it is now. I would also say the vibration has progressively gotten worse SINCE I replaced the hub -- suggesting something post-hub-replacement is getting worse. Oct 27, 2017 at 18:59
  • @CharlieRB I wouldn't say the vibration gets worse with speed, but the vibrations do change in frequency to match the speed of the car. The wheels were last balanced about 6mo ago. Oct 27, 2017 at 19:01

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