| DEFINITION: A noise heard during acceleration load. |
| Excessive pinion to ring gear backlash |
Adjust the pinion to ring gear backlash. Refer to Backlash Adjustment . |
| Worn pinion and ring gear |
Replace the pinion and the ring gear. Refer to Drive Pinion and Ring Gear Replacement . |
| Worn pinion bearings |
Replace the pinion bearings. Refer to Drive Pinion Bearings Replacement . |
| Loose pinion bearings |
Adjust the pinion bearings preload. Refer to Pinion Depth Adjustment . |
| Excessive pinion end play |
Adjust the pinion end play. Refer to Pinion Depth Adjustment . |
| Worn differential bearings |
Replace the differential bearings. Refer to Differential Side Bearings Replacement . |
| Loose differential bearings |
Adjust the differential bearing preload. Refer to Differential Carrier Bearing Preload Adjustment . |
| Excessive ring gear runout |
Replace the ring gear. Refer to Drive Pinion and Ring Gear Replacement . |
| Low oil level |
Fill the fluid level to specifications with the proper lubricant. Refer to Rear Axle Lubricant Level Inspection . |
| Wrong or poor grade oil |
Drain and refill the system with the proper lubricant. Refer to Rear Axle Lubricant Replacement . |
| Bent axle housing |
Replace the axle housing. Refer to Rear Axle Housing Replacement . |