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Service bulletin 170702

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 id637289
Published by NHTSA2002-11-22
Manufacturer's number170702
Manufacturer's date2002-07-17
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

SOME VEHICLES MAY EXHIBIT A VARIETY OF VEHICLE ISSUES INCLUDING MISFIRE CODES TO THE ENGINE, DIAGNOSTIC TROUBLE CODE P0300, CATALYTIC CONVERTER FAILURES, REPEAT CATALYTIC CONVERTER FAILURES AND OTHER DRIVABILITY CONCERNS. *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

Trouble codes named

P0300

Vehicles listed
GMC GM

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