This bulletin applies to 2014-2019 Chevy Corvettes equipped with a 6.2L LT1, LT4 or LT5 engine, regarding a concern of engine thermostat tick noise and/or running hot.
2011-2012 Corvette models equipped with the Z06 with Z07 and 2009-2012 Corvette ZR1 models equipped with J57 ceramic brake packages feature ceramic brake rotors that use an electronic sensor to indicate the need for brake pad replacement. The end of service life is communicated to the driver on the DIC (driver information center) with the message “CHANGE BRAKE PADS.”
This bulletin applies to 2009-2012 Corvette ZR1 and 2011-2012 Corvette Z06 with Z07 models, all equipped with the ceramic brake package (RPO J57).
According to GM, a “very small number” of 2013 Corvettes may exhibit an abnormal exhaust noise, due to an improperly torqued exhaust joint after the catalytic converter.
Some owners of select GM vehicles may comment on a low brake pedal during braking. See the application list at the end of this bulletin.
This bulletin applies to 2003-2014 Chevy Corvette and 2009-2014 Cadillac CTS models equipped with Magnaride (magnetically controlled suspension). The issue involves the Magnaride electrical connector not seated, along with DTCs C0575, C0580, C0585 or C0590. The customer may see a Service Suspension System message displayed on the driver’s information center (DIC).