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Service bulletin 20NA230

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10187424
Published by NHTSA2021-02-22
Manufacturer's number20NA230
Manufacturer's date2020-12-21
NHTSA componentEXTERIOR LIGHTING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE

NHTSA's summary

This service bulletin provides a procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) - DTC P2B95, P2B0A, P2B08, P2B09, and/or P2B0B set.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Lighting, Engine control module

Trouble codes named

P2B08, P2B09, P2B0A, P2B0B, P2B95

Vehicles listed
CHEVROLET EQUINOX2021
CHEVROLET MALIBU2021
GMC TERRAIN2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PIP5628F2023-05-15. Service bulletin. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
PIE07032022-06-10. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Intermittent No Start But Vehicle Has Power.
21NA2572022-02-14. Service bulletin. This service bulletin provides a service procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3075 Set.
A2023219902021-08-09. Service bulletin. Service Update. Certain vehicles may have engine control module software that leads to erroneous additional fuel enrichment under rare driving conditions. Dealers are to reprogram the engine control module.
21NA1392021-08-09. Service bulletin. This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
20NA2342021-02-22. Service bulletin. This service bulletin provides a procedure to program the ECM if found the cause of the MIL.
20NA2342021-02-01. Service bulletin. This service bulletin provides a procedure to program the ECM if found the cause of the MIL.