| • | J 39570 Chassis Ear | 
| • | J 41416 Ultrasonic Leak Detector | 
| Important: Squeaks and rattles are caused by improperly controlled relative motion between vehicle components. There are 4 ways to prevent squeaks and rattles. To aid in diagnosing, use J 39570 or J 41416 . | 
| • | Attach the component that squeaks or rattles securely. | 
| • | Separate the components that squeak or rattle to prevent contact. | 
| • | Insulate the components that squeak or rattle. | 
| • | Insulate low uniform friction surfaces to eliminate stickslip motion. |