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
GMCSAVANA 35002003
GMCSAVANA 35002002
GMCSAVANA 35002001
GMCSAVANA 35002000
GMCSIERRA 15002023
GMCSIERRA 15002022
GMCSIERRA 15002021
GMCSIERRA 15002020
GMCSIERRA 15002019
GMCSIERRA 15002018
GMCSIERRA 15002017
GMCSIERRA 15002016
GMCSIERRA 15002015
GMCSIERRA 15002014
GMCSIERRA 15002013
GMCSIERRA 15002012
GMCSIERRA 15002011
GMCSIERRA 15002010
GMCSIERRA 15002009
GMCSIERRA 15002008
GMCSIERRA 15002007
GMCSIERRA 15002006
GMCSIERRA 15002005
GMCSIERRA 15002004
GMCSIERRA 15002003
GMCSIERRA 15002002
GMCSIERRA 15002001
GMCSIERRA 15002000
GMCSIERRA 1500 HD2005
GMCSIERRA 1500 HD2004

Data coverage →