CB25-K-001A

CAMPAIGN BULLETIN -- IN SOME 2025MY ISUZU N-SERIES VEHICLES EQUIPPED WITH 6.6L GASOLINE ENGINES AND 8L90 AUTOMATIC TRANSMISSIONS AND WHOLESALED PRIOR TO DECEMBER 13, 2024, THE ORIGINAL CALIBRATION IN THE TRANSMISSION CONTROL MODULE (TCM) CONTAINED INCORRECT LOGIC THAT MAY UNNECESSARILY CAUSE DIAGNOSTIC TROUBLE CODE (DTC) P175E TO SET AND ILLUMINATE THE CHECK ENGINE MALFUNCTION INDICATOR LIGHT (MIL). AN UPDATED TCM CALIBRATION CORRECTING THIS CONCERN IS NOW AVAILABLE. ADDITIONALLY, THE TRANSMISSION FAST LEARN PROCEDURE MUST BE COMPLETED AFTER THE TCM REPROGRAMMING HAS BEEN COMPLETED.