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Service bulletin 0816423

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 id10242796
Published by NHTSA2023-09-25
Manufacturer's number0816423
Manufacturer's date2023-07-12
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

Humidity Sensor Harness Missing Technician may have issues re-establishing the connection after replacing the vehicle rear wiring. There is no humidity sensor connection on the vehicle rear wiring harness

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

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
ALFA ROMEO GIULIA2017 to 2018

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