when i had mine repaired, they took my wod for it and had it on the lift with the part ready to replace withing 15 minutes. They told me that it has been a big problem and my dealership was well aware of the issue because the silverados/tahoes have the same issues. They just replaced the gasket on mine......luckily, they only had the part for the zo6 motor which is a better one and has silicone edges which makes for a better seal.
2010 IOM SS/RS LS3, Hennessey HPE550 Polished Magnuson TVS2300 Supercharger. 3.4 Pulley. Kooks long tube headers / high flow cats. GHL Full exhaust. ZL1 Fuel Pump/ADM FPCM. MSW Bap. JRE ZL1 Race cam with new springs/pushrods/Trunion Upgrade. FIC 850cc injectors. ZR1 Map sensor. CAI Induction. JRE Tune.