Review the system and operation in order to familiarize yourself with the system functions. Refer to Rear Drive Axle Description and Operation .
| • | Inspect the system for loose or missing fasteners. |
| • | Inspect the system for leaking components. |
| • | Inspect the system for obvious damage or conditions which may cause the symptom. |
Refer to a system diagnostic procedure from the following list in order to diagnose the symptom: