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Service bulletin Reference46A

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 id10241053
Published by NHTSA2023-08-21
Manufacturer's numberReference46A
Manufacturer's date2023-06-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN; ELECTRICAL SYSTEM

NHTSA's summary

Customer Satisfaction Notification 46A - Powertrain Control Module Software

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
ALFA ROMEO GIULIA2023
ALFA ROMEO STELVIO2023

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
18023232024-01-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P1CEA-00 - Boost Side Evap Purge System Performance. This bulletin involves reprogramming the PCM with the latest available software.
18023232023-05-30. Service bulletin. Flash: Powertrain Control Module (PCM) Updates
18023232023-04-17. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P1CEA-00 - Boost Side Evap Purge System Performance. This bulletin involves reprogramming the PCM with the latest available software.