Home21-NA-124 · BUICK, CADILLAC, CHEVROLET, GEO, GMC
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
ChevroletS102003
ChevroletS102002
ChevroletS102001
ChevroletS102000
ChevroletSILVERADO 15002023
ChevroletSILVERADO 15002022
ChevroletSILVERADO 15002021
ChevroletSILVERADO 15002020
ChevroletSILVERADO 15002019
ChevroletSILVERADO 15002018
ChevroletSILVERADO 15002017
ChevroletSILVERADO 15002016
ChevroletSILVERADO 15002015
ChevroletSILVERADO 15002014
ChevroletSILVERADO 15002013
ChevroletSILVERADO 15002012
ChevroletSILVERADO 15002011
ChevroletSILVERADO 15002010
ChevroletSILVERADO 15002009
ChevroletSILVERADO 15002008
ChevroletSILVERADO 15002007
ChevroletSILVERADO 15002006
ChevroletSILVERADO 15002005
ChevroletSILVERADO 15002004
ChevroletSILVERADO 15002003
ChevroletSILVERADO 15002002
ChevroletSILVERADO 15002001
ChevroletSILVERADO 15002000
ChevroletSILVERADO 1500 HD2005
ChevroletSILVERADO 1500 HD2004

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