Technical Service Bulletin ITB12023B — 2011 INFINITI G37

IF YOU CONFIRM: If the customer reports or has previously reported: * Harsher than expected down shifts when coasting to a stop. * Hesitation/lag when accelerating after coasting. * Hesitation/lag or harsher than expected down shifts when coming to a stop and accelerating again (rolling stop). * Engine rev matching during moderate to heavy braking. NOTE: This is normal ASC (Adaptive Shift Control) operation that can be removed from normal drive mode, but will remain in sport mode. ACTION: CAUTION: There are two different possible ECM reprograms based on which generation of TCM is in the vehicle. TCM must be reprogrammed first. * Reprogram TCM first, then using new TCM part number select matching ECM reprogram using Consult III plus. See procedureon next page. See this bulletin for further details.