WenmarOpen by Wenmar Pro

Service bulletin 020605004

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 id10006177
Published by NHTSA2004-04-26
Manufacturer's number020605004
Manufacturer's date2002-10-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

NHTSA's summary

MISFIRE DTCS AND CATALYTIC CONVERTER DAMAGE DUE TO INSTALLATION OF ALARM SYSTEMS. 2003 AND PRIOR GM PASSENGER CARS AND LIGHT DUTY TRUCKS & 2003 AND PRIOR ISUZU LIGHT DUTY TRUCKS. *MR

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

Engine, Exhaust and emissions, Catalytic converter

Vehicles listed
AM GENERAL HUMMER2003

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