Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Squeaks and Rattles



Squeaks and Rattles


Tools Required
* 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, useJ 39570 orJ 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.