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BUICK, CADILLAC, CHEVROLET, GEO, GMC

21-NA-124

Manufacturer communications

Publication date
2022-12-14
Received by NHTSA
2023-01-06
NHTSA record numbers
10228888

Manufacturer summary

Original wording in English

This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

NHTSA manufacturer communications ↗

Reported code forms

P0442P0455

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
ChevroletC SERIES2003
ChevroletC102001
ChevroletC102000
ChevroletC35002018
ChevroletC45002010
ChevroletC45002009
ChevroletC45002008
ChevroletC45002007
ChevroletC45002006
ChevroletC45002005
ChevroletC45002004
ChevroletC45002003
ChevroletC4500 NA2008
ChevroletC55002008
ChevroletC55002007
ChevroletC55002006
ChevroletC55002005
ChevroletC55002004
ChevroletC55002003
ChevroletC65002009
ChevroletC65002008
ChevroletC65002007
ChevroletC65002006
ChevroletC65002005
ChevroletC65002004
ChevroletC65002003
ChevroletC65002002
ChevroletC65002001
ChevroletC65002000
ChevroletC75002009

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