Home21NA124 · BUICK, CADILLAC, CHEVROLET, GMC
BUICK, CADILLAC, CHEVROLET, GMC

21NA124

Manufacturer communications

Publication date
2021-05-25
Received by NHTSA
2021-07-06
NHTSA record numbers
10198890 · 10199281

Multiple filings of the same bulletin are grouped here; original record numbers remain available.

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
ChevroletEXPRESS2015
ChevroletEXPRESS2014
ChevroletEXPRESS2013
ChevroletEXPRESS2012
ChevroletEXPRESS2011
ChevroletEXPRESS2010
ChevroletEXPRESS2009
ChevroletEXPRESS2008
ChevroletEXPRESS2007
ChevroletEXPRESS2006
ChevroletEXPRESS2005
ChevroletEXPRESS2004
ChevroletEXPRESS2003
ChevroletEXPRESS2002
ChevroletEXPRESS2001
ChevroletEXPRESS2000
ChevroletF SERIES2006
ChevroletF SERIES2005
ChevroletG SERIES2000
ChevroletG VAN BUS2006
ChevroletG VAN BUS2005
ChevroletG VAN BUS2004
ChevroletG VAN BUS2002
ChevroletG VAN BUS2001
ChevroletH SERIES2001
ChevroletHHR2011
ChevroletHHR2010
ChevroletHHR2009
ChevroletHHR2008
ChevroletHHR2007

Data coverage →