Engine Misfire, Malfunction Indicator Lamp (MIL) Illuminated – DTC P0300 Set – 2017-2022 Buick Chevrolet GMC Holden

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NHTSA ID Number: 10205575

Manufacturer Communication Number: 21NA255

 

Summary

This service bulletin provides repair information to correct a customer concern of an Engine Misfire, Malfunction Indicator Lamp (MIL) Illuminated – DTC P0300 Set.

 

 


22 Affected Products

Vehicles

MAKE MODEL YEAR
BUICK ENCORE 2021-2022
CHEVROLET CRUZE 2018-2019
CHEVROLET EQUINOX 2018-2022
CHEVROLET MALIBU 2018-2022
CHEVROLET TRAX 2020-2022
GMC TERRAIN 2018-2022

 


Condition

Some customers may comment on one or more of the following conditions:

  • MIL illuminated
  • Engine misfire

Technicians may find DTC P0300 set in the Engine Control Module (ECM).

 

Cause

This condition may be caused by a broken spark plug insulator.

 

Correction

If you encounter a vehicle with an engine misfire or engine misfire related DTC, perform the following:

⇒ Remove the spark plugs from the engine and inspect for a broken center insulator by inverting the spark plug. Once the spark plug has been inverted, you may find the insulator will slide down the center electrode.

 

Service Procedure

Refer to Gas Engine Ignition Spark Plug Inspection and Gas Engine Ignition Spark Plug Replacement in SI.

 



1 Associated Document

Manufacturer Communications

Bulletin No.: 21-NA-255
Date: November, 2021

https://www.nhtsa.gov/recalls?nhtsaId=10205575

MC-10205575-9999.pdf 65.005KB

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