Body Boom Noise or Vibration

Objectionable body boom noise or vibration usually occurs at 90 to 100 km/h (55 to 65 mph) and can be caused by the following:

• An out of balance propeller shaft
• Excessive looseness at the propeller shaft
• Excessive wear at the propeller shaft
• Excessive yoke splines may also cause a propeller shaft to be unbalanced

If all indications point to a rear axle noise after making a comprehensive check of the vehicle, it is necessary to determine what component in the rear axle is at fault. True rear axle noise generally falls into one of the two following categories:

• Bearing noise
• Gear noise