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Service bulletin 00T56

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 id615588
Published by NHTSA2001-01-25
Manufacturer's number00T56
Manufacturer's date2000-10-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

SOME VEHICLES BUILT BEFORE AND INCLUDING VIN ZY145976 MAY EXPEIRENCE A LIGHT TAPPING, TICKING, OR KNOCKING NOISE THAT COMES FROM THE ENGINE COMPARTMENT. THE FREQUENCY OF THE NOISE INCREASES WITH ENGINE RPM. *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
SATURN S-SERIES1999 to 2000

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