Technical Service Bulletins

Find the Source of Knocking, Buzzing in a Camaro

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CHEVY Camaro TSB.jpg

The cause of the noise may be contamination of the lube grease within the supercharger, which then causes the bearing to make noise. If the condition exists and is left unaddressed, the bearing may overheat and cause damage to the supercharger.

Some owners of 2009-2014 and later Chevy Camaro vehicles equipped with a 6.2L supercharged engine may experience a rattle or knocking noise at mid-to-high mileage, especially prominent at idle, and/or a screeching noise especially when cold.

A buzz noise (similar to a heat shield buzz) at a narrow RPM band between 700-1300 RPM may also be heard. A light to moderate noise at idle that sounds like marbles in the supercharger may also be heard, with the sound going away when engine speed increases to about 1200 RPM.

The cause may be contamination of the lube grease within the supercharger that may cause the bearing to make noise. If the condition exists and is left unaddressed, the bearing may overheat and cause damage to the supercharger.

Replace the supercharger front cover. Note: On vehicles built prior to 2014 that have not had a service replacement supercharger installed after November 2013, replace the supercharger.

P/NDescription
12613457
gasket – charge air cleaner housing
12612467
insulator – charge air cleaner LWR
19180613
gasket kit, intake manifold
12576549
seal, throttle body
12670278
supercharger kit
12670289
supercharger front cover kit


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August 2020

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