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
GMCSIERRA 1500 HD2003
GMCSIERRA 1500 HD2002
GMCSIERRA 1500 HD2001
GMCSIERRA 25002023
GMCSIERRA 25002022
GMCSIERRA 25002021
GMCSIERRA 25002020
GMCSIERRA 25002019
GMCSIERRA 25002018
GMCSIERRA 25002017
GMCSIERRA 25002016
GMCSIERRA 25002015
GMCSIERRA 25002014
GMCSIERRA 25002013
GMCSIERRA 25002012
GMCSIERRA 25002011
GMCSIERRA 25002010
GMCSIERRA 25002009
GMCSIERRA 25002008
GMCSIERRA 25002007
GMCSIERRA 25002006
GMCSIERRA 25002005
GMCSIERRA 25002004
GMCSIERRA 25002003
GMCSIERRA 25002002
GMCSIERRA 25002001
GMCSIERRA 25002000
GMCSIERRA 35002023
GMCSIERRA 35002022
GMCSIERRA 35002021

Data coverage →