GM Service Manual Online
For 1990-2009 cars only

Before beginning diagnosis, review the system description and operation in order to familiarize yourself with the system functions. Refer to Front Drive Axle Description and Operation .

Classifying the Symptom

Front Drive Axle symptoms can usually be classified into the following categories:

    â€¢ Leaks
    â€¢ Noises
    â€¢ Vibrations

Leak and noise related symptoms are diagnosed within the Front Drive Axle section. For vibration related symptoms, refer to Diagnostic Starting Point - Vibration Diagnosis and Correction .

Visual/Physical Inspection

    â€¢  Inspect the system for loose or missing fasteners.
    â€¢  Inspect the system for loose or leaking components.
    â€¢  Inspect the system for obvious damage or conditions which may cause the symptom.

Symptoms List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom.

    â€¢  Front Drive Axle Noises
    â€¢  Noisy in Drive
    â€¢  Noisy When Coasting
    â€¢  Intermittent Noise
    â€¢  Constant Noise
    â€¢  Noisy on Turns
    â€¢  Front Axle Lubricant Leak Diagnosis