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 an out of balance propeller shaft. Excessive looseness or wear at the propeller shaft sliding 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 a fault. True rear axle noise generally falls into two categories:
- Bearing noise.
- Gear noise.