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
ChevroletSILVERADO 25002006
ChevroletSILVERADO 25002005
ChevroletSILVERADO 25002004
ChevroletSILVERADO 25002003
ChevroletSILVERADO 25002002
ChevroletSILVERADO 25002001
ChevroletSILVERADO 25002000
ChevroletSILVERADO 35002017
ChevroletSILVERADO 35002001
ChevroletSILVERADO 35002000
ChevroletSILVERADO 45002021
ChevroletSILVERADO 45002020
ChevroletSILVERADO 45002019
ChevroletSONIC2020
ChevroletSONIC2019
ChevroletSONIC2018
ChevroletSONIC2017
ChevroletSONIC2016
ChevroletSONIC2015
ChevroletSONIC2014
ChevroletSONIC2013
ChevroletSONIC2012
ChevroletSPARK2021
ChevroletSPARK2020
ChevroletSPARK2019
ChevroletSPARK2018
ChevroletSPARK2017
ChevroletSPARK2016
ChevroletSPARK2015
ChevroletSPARK2014

Data coverage →