TECHNICAL SERVICE BULLETIN: SERVICE ACTION: VARIABLE MUFFLER OPERATION LOGIC IMPROVEMENT (SA468) - This bulletin provides the procedure to update the software logic of the Engine Control Module (ECM) system on some 2022MY Stinger (CK) vehicles equipped with the 3.3L GDI engine and 8AT transmission, produced from January 15, 2021 through February 5, 2021, to improve the variable sound of the muffler in "sport mode."
