Checks  | Action  | 
|---|---|
Excessive pinion to ring gear backlash  | Adjust the pinion to ring gear backlash. Refer to Backlash Inspection and Adjustment .  | 
Worn pinion and ring gear  | Replace the pinion and the ring gear. Refer to:  | 
Worn pinion bearings  | Replace the pinion bearings. Refer to:  | 
Loose pinion bearings  | Adjust the pinion bearings preload. Refer to:  | 
Excessive pinion end play  | Adjust the pinion end play. Refer to Differential Carrier Assembly Assemble .  | 
Worn differential bearings  | Replace the differential bearings. Refer to:  | 
Loose differential bearings  | Adjust the differential bearing preload. Refer to:  | 
Excessive ring gear runout  | Replace the ring gear. Refer to:  | 
Low oil level  | Fill the fluid level to specifications with the proper lubricant. Refer to Front Axle Lubricant Level Inspection .  | 
Wrong or poor grade oil  | Drain and refill the system with the proper lubricant. Refer to Front Axle Lubricant Replacement .  |