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Service bulletin 1801903

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 id10002397
Published by NHTSA2003-08-27
Manufacturer's number1801903
Manufacturer's date2003-05-02
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

ENGINE SPARK KNOCK USING 91 OCTANE GASOLINE. *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
DODGE VIPER1997, 1998, 1999, 2000, 2001, 2002

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

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