Infiniti G37 2009–2012 — technical service bulletin
Bulletin ITB12027D · NHTSA communication 10192070 · issued Nov 14, 2012
Technical service bulletin
communication type
Power Train
component
2009–2012
model years
4
vehicle entries
Official summary
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. ACTION 1. Referto step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on. 2. If this bulletin applies, reprogram the ECM and TCM. See this bulletin for further detail.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.