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Service bulletin ITB12-023

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10043949
Published by NHTSA2012-05-03
Manufacturer's numberITB12-023
Manufacturer's date2012-05-02
ReplacesITB12-023
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

INFINITI: SHIFT RESPONSIVENESS ISSUES. REPROGRAM TCM FIRST, THEN USING NEW TCM PART NUMBER SELECT MATCHING ECM REPROGRAM. SEE PROCEDURE. *JS UPDATED 5/8/12. *JS

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
INFINITI G252011

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
ITB-10-0752011-04-12. Service bulletin. INFINITI: TRANSMISSION SHIFT ISSUES AND/OR A/T DTC STORED. A SLIGHT VEHICLE VIBRATION/SHUTTER WITH LIGHT ACCELERATION AT LOW SPEEDS; AT TIMES ENGINE RPM GOES UP (ABOUT 200-250 RPM) DURING THE 3RD>4TH UP SHIFT, OR THE 4TH>5TH UP SHIFT; ENGINE BRAKING FEEL IS MORE THAN EXPECTED WITH DECELERATION; THE 2ND>1ST DOWN SHIFT IS HARSHER THAN EXPECTED. *PE UPDATED ON 6/15/2011. *KB