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Service bulletin IB00S004

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 id614140
Published by NHTSA2000-09-29
Manufacturer's numberIB00S004
Manufacturer's date2000-02-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

ISUZU HAS DEVELOPED NEW ENGINE EXHAUST VALVES, GUIDES, AND SEATS TO IMPROVE THE DURABILITY OF EXHAUST VALVES USED IN MODELS EQUIPPED WITH 2.3L (1986 - 1995) AND 2.6L (1988 - 1995) 4ZD1 AND 4ZE1 ENGINES. *TT

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

Vehicles listed
ISUZU AMIGO
ISUZU PICKUP TRUCK (the catalog's model; the bulletin names a series or trim of it)
ISUZU RODEO
ISUZU TROOPER II

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