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Service bulletin PIT5839C

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 id10231612
Published by NHTSA2023-02-13
Manufacturer's numberPIT5839C
Manufacturer's date2023-01-03
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This Preliminary information communicates to GM dealers that the above mentioned concern is software related and that General Motors is working on a solution.

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

Electrical system, Software

Vehicles listed
CHEVROLET BLAZER2020
CHEVROLET MALIBU2020
CHEVROLET SONIC2020
CHEVROLET TRAX2020, 2021

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
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
PIP5632G2023-01-30. Service bulletin. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
PIP4902Q2023-01-30. Service bulletin. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
PIP58142023-01-30. Service bulletin. This Preliminary information communicates that there some service parts released to dealers missing software.
PIT59452022-10-17. Service bulletin. This Preliminary information communicates that engineering is aware of the radio RAP staying on concern and is working on a resolution.
21NA2562022-02-14. Service bulletin. This service bulletin provides repair information for dealers/technicians to correct a customer concern of a Malfunction Indicator Lamp Illuminated with DTC P26BB Set.
PIP5675G2022-01-24. Service bulletin. This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
20NA1712021-12-27. Service bulletin. This service bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
21NA1452021-08-09. Service bulletin. This service bulletin provides U157 software update information to correct customer concerns of radio Software related issues.
20NA1992021-02-22. Service bulletin. This technical bulletin provides programming information for Radio Software Version U150 Update to correct software issues on infotainment systems IOS, IOT or IOU.