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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.

  • 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 '17 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 '17 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. – theforestecologist Oct 27 '17 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. – theforestecologist Oct 27 '17 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. – theforestecologist Oct 27 '17 at 19:01

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