Differential failure can result from low lubricant, the wrong fluid, contamination, worn bearings, damaged gears, or incorrect internal adjustment. A leak that goes unnoticed may gradually reduce lubrication until components overheat or wear excessively.
Heavy loads and sudden shock loads can also contribute to damage, particularly when components are already worn. The cause matters because replacing damaged parts without correcting the underlying problem can lead to another failure.
If you notice a new noise or leak while driving around Bellevue or Sarpy County, contact Certified Transmission to arrange an inspection.