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
CadillacDEVILLE2005
CadillacDEVILLE2004
CadillacDEVILLE2003
CadillacDEVILLE2002
CadillacDEVILLE2001
CadillacDEVILLE2000
CadillacDTS2011
CadillacDTS2010
CadillacDTS2009
CadillacDTS2008
CadillacDTS2007
CadillacDTS2006
CadillacELDORADO2002
CadillacELDORADO2001
CadillacELDORADO2000
CadillacELR2017
CadillacELR2016
CadillacELR2015
CadillacELR2014
CadillacESCALADE2020
CadillacESCALADE2019
CadillacESCALADE2018
CadillacESCALADE2017
CadillacESCALADE2016
CadillacESCALADE2015
CadillacESCALADE2014
CadillacESCALADE2013
CadillacESCALADE2012
CadillacESCALADE2011
CadillacESCALADE2010

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