This bulletin applies to brake pulsation issues on 2014-2016 Corvettes equipped with the heavy-duty brake system (RPO J55). Customers may comment about a pulsation and/or vibration when applying the brakes.
They may also comment about a rattle noise that goes away when the brakes are lightly applied. The condition may be due to excessive lateral runout or interaction between the inner top hat section and the rotor ring.
Brake rotor assembly design has been changed from a two-piece to a one-piece design.
For front rotors and vehicle built prior to May 31, 2016, replace the old two-piece design with the new one-piece design. For rear rotors and vehicles built prior to July 23, 2015, replace the old two-piece design with the new one-piece design. Rotors must be replaced as pairs (both fronts and/or both rears).
Do not replace rotors unless you find lateral runout out of spec.
P/N ........................... ROTOR
23242229 ................. Front rotor
23322785 ................. Rear rotor
