Fixing a Rattling Cadillac

Some owners of 2016-2019 Cadillac ATS or 2014-2019 CTS Sedan vehicles equipped with a 3.6L engine may comment about a brief rattle or ticking noise when revving the engine in Park/Neutral, and/or during acceleration/deceleration in Drive. The same noise can sometimes be heard when cold but goes away when warm.

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