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rocker arm

This applies to all 2000-2018 GM V6 and V8 pushrod engines equipped with roller rockers. GM notes that if you find roller rocker arm needle bearings during an oil change, inspect all rocker arms. 

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Acura Rocker Switch

This bulletin applies to 2007-2012 Acura RDX and 2002-2006 RSX models. The MIL may be on with one of the following DTCs:

Noisy Subaru

This bulletin applies to 2011 Subaru Forester models equipped with a 2.5L naturally aspirated engine. When diagnosing an engine for an unusual sound and it’s determined to be coming from the left side cylinder head area, the head, intake camshaft, intake valves and all rocker arm pivots may need to be replaced. The sound can be heard at idle and increases with rpm, similar to the sound of a sewing machine.

Bad Acura Pressure Switch

This bulletin applies to 2013 Acura RDX vehicles. The MIL may be on, with one or both of the following DTCs: