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
GMCSAVANA2018
GMCSAVANA2017
GMCSAVANA2016
GMCSAVANA2015
GMCSAVANA2014
GMCSAVANA2013
GMCSAVANA2012
GMCSAVANA2011
GMCSAVANA2010
GMCSAVANA2009
GMCSAVANA2008
GMCSAVANA2007
GMCSAVANA2006
GMCSAVANA2005
GMCSAVANA2004
GMCSAVANA2003
GMCSAVANA2002
GMCSAVANA2001
GMCSAVANA2000
GMCSIERRA 15002021
GMCSIERRA 15002020
GMCSIERRA 15002019
GMCSIERRA 15002014
GMCSIERRA 25002021
GMCSIERRA 25002020
GMCSIERRA 25002019
GMCSIERRA 25002018
GMCSIERRA 25002017
GMCSIERRA 25002016
GMCSIERRA 25002015

Data coverage →