Q: Low hovering/humming (not high pitched) sound driving over 35mph.

您好，谢谢您询问您的2006年雪佛兰Malibu。车轮轴承故障通常不会导致车辆摇动。相反，他们将准确地发出您所描述的噪音：嗡嗡声。尽管嗡嗡声是典型的，但根据故障模式，还有其他声音和频率会发生。例如，如果轴承竞赛确实被“摧毁”（姿势），那么听起来就像您在碎石路上开车。噪音会很大。车轮轴承故障会模仿轮胎缺陷，包括仅异常的胎面磨损。万博体育入口您的机电人员通常会将无线底盘耳朵应用于四个车轮轴承位置。使用无线拾取器，驾驶员旁边的通道接收器将识别噪声从中降低的车轮。您可以自己骑行并亲眼看到它。 In some cases, though the bearing failure is so obvious that merely "loading and unloading" the vehicle suspension on a curve will identify the wheel position. Your bearings are bolted on assemblies so they are straightforward to replace; you need not worry. Also, for your application it must be determined whether the mounting bolts are re-usable. The FSM for many GM vehicles of your type states in huge print: DO NOT re-use the wheel bearing mounting bolts. That is because those bolts are typically tightened to 90 ft lbs., which is very tight, and when you start reusing a bolt already subjected to high stress, they tend to weaken and can fail in the field. At any rate, the first order of business is to rule out tire noise. Once that is done it is a simple matter to identify the wheel position. Also, if a front bearing has failed, you might consider replacing both sides as the other may not be far behind. Finally, buy the part from AC Delco. In other words, don’t get the cheapest one you can find, even if it says "guaranteed forever," which has no meaning insofar as the quality of the part. Another good vendor is SKF. If you would like help, a technician from YourMechanic caninspect the noise in your vehicleand make the necessary repairs.