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Service bulletin 9909A

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 id10000539
Published by NHTSA2003-03-24
Manufacturer's number9909A
Manufacturer's date1999-07-27
Replaces9909
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

ISC-POWERED EMERGENCY VEHICLES EXPERIENCING POOR ENGINE PERFORMANCE AND SHUTDOWN DUE TO RATE SHAPE SNUBBER, LUBE OIL COOLER AND BELT TENSIONER FAILURES. *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
CUMMINS ISC

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