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Service bulletin 550890

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 id10147526
Published by NHTSA2018-11-13
Manufacturer's number550890
Manufacturer's date2018-10-31
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Certain vehicles were manufactured with a Safe-T-Alert LP/CO detector that incorporated a relay that would shut off the LP supply if the LP/CO went into alarm mode. The LP/CO detectors? wiring from the detector to the relay and solenoid was not installed, however, this has no ill effect on proper operation of the LP/CO detector in detecting unsafe levels of CO or LP gas.

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

Vehicles listed
DYNAMAX ISATA2017 to 2018

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