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Service bulletin 776508

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 id51355
Published by NHTSA1999-12-20
Manufacturer's number776508
Manufacturer's date1997-02-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)

NHTSA's summary

DTC P0442 CAUSED BY A EVEAP VENT (SOLENOID) VALVE LEAK. *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

Engine, Exhaust and emissions, EGR valve

Trouble codes named

P0442

Vehicles listed
CHEVROLET C SERIES1997
CHEVROLET K SERIES1997
CHEVROLET L SERIES1997
CHEVROLET M SERIES1997
CHEVROLET S SERIES1997
CHEVROLET T SERIES1997
GMC C SERIES1997
GMC K SERIES1997
GMC L SERIES1997
GMC M SERIES1997
GMC S SERIES1997
GMC T SERIES1997
OLDSMOBILE BRAVADA1997

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