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Service bulletin 99T66A

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 id618434
Published by NHTSA2001-04-12
Manufacturer's number99T66A
Manufacturer's date2000-09-01
Replaces99T66
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

SOME VEHICLES MAY EXHIBIT A SERVICE ENGINE SOON TELLTALE ON AND A DIAGNOSTIC TROUBLE CODE P0133 - O2S SLOW RESPONSE SENSOR 1. *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.

Trouble codes named

P0133

Vehicles listed
SATURN S-SERIES1999

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