Initial Inspection and Diagnostic Overview: Overview

The information provided will provide a working knowledge of the process required to diagnose Noise, Vibration, And Harshness (NVH) situations. Before attempting to diagnose an NVH condition, read the Diagnostic Theory and Glossary of Terms.

After becoming familiar with the methods and terms used in NVH diagnosis, review the diagnostic procedures. The most important part of diagnosis is the road test. The wide range of NVH is defined and narrowed to a specific area of the vehicle.

With the type of condition known, the diagnostic procedures should be used to define the diagnosis of a specific component. After making any repair, always road test the vehicle to confirm that the condition has been corrected to the owner's satisfaction.