- February 25, 2016 at 7:22 pm #11277AnonymousInactive
I have a 1999 Pontiac Grand Prix and for 3 months – started out with a vibration from the front end around 30-40 mph and as you accelerate the shaking gets worse and worse. When you let off the gas the shaking stops. I had the tires balanced, put in new front hub bearings but that has no effect.
- February 25, 2016 at 7:22 pm #11263AnonymousInactive
Front end noise driver side.Replace front driver side hub bearing.Still same noise,what could be.Thanks
- August 25, 2016 at 9:30 pm #13924ProtechGuest
Depends on the type of noise, but could be a bad STRUT or upper mount, a control arm bushing that has come loose, a tie rod end with excessive play or most likely a front sway bar end link. The end links on the front sway bar go bad most often on the G6, so I’d check those first.
Anonymous: Noise is like bad bearing, starts at 40K.Car was service by GM replace power steering rack, front end align. steering column replace and bushings. the wheel on that side has dent on the rim. Car was service by GM tech.104K.
Protech: ad tires can make a noise like a bad bearing too. If the TREAD pattern is worn, uneven, or has a feathered feel to it, that will cause a roaring type noise at speed that can be mistaken for a bearing noise.
Anonymous: spoke GM service, they said first right side goes, look like right side ,left is now OK. Should be replace both.
Protech: I always suggest doing tires in pairs (front or rear) or all four at once. Just replacing one tire, especially on the front, can lead to alignment problems, steering wheel being off center, etc. This results from the newer tire having more tread than the older tire and actually being a different diameter (taller) than the old one on the other side. I’d put two new front tires on your car and be done.
Anonymous: I CHANGED right side hub bearing the noise is gone.
- August 25, 2016 at 9:15 pm #13916ProtechGuest
I would have to say that if you are sure it does not feel like and engine miss, then a few possibilities.
A worn engine mount. Start car, foot firmly on brake pedal, press on the gas slowly going higher andf higher. This is called a brake TORQUE. If there is a worn engine mount, you will feel and possibly hear the vibration. It may not sound or feel exactly like when driving, but similar. Then do the same in reverse. A worn engine mount will usually sound different or not be there at all as comparing drive to reverse.
A possible loose CV joint on one of the front axles, or axle loose as it goes into the trans. A worn CV joint is a little harder to diagnose. A loose axle in the trans can be found by just grabbing a hold of the axles and wiggling right were they come out if the transmission.
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