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.
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.
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
