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Service bulletin 990303

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 id607698
Published by NHTSA2000-06-21
Manufacturer's number990303
Manufacturer's date1999-08-01
NHTSA componentFUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM

NHTSA's summary

INFORMATION CONCERNING INJECTION TIMING STEPPER MOTOR. *AK

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

Fuel system, Fuel injection

Vehicles listed
AM GENERAL HUMMER1996 to 1999

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