Differential Side Bearing Noise
WARNING: This page is about a different car, the 2007 Suzuki Reno, 2007 Suzuki Forenza, 2006 Suzuki Reno, and 2006 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.
Differential side bearing noise and wheel bearing noise can be confused easily. Since side bearings are preloaded, a differential side bearing noise should not diminish much when the differential/transaxle is run with the wheels off the ground.