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Service bulletin 21NA024

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 id10214205
Published by NHTSA2022-06-21
Manufacturer's number21NA024
Manufacturer's date2022-01-18
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of Service Engine Soon MIL Illuminated with DTC P2B87 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

Electrical system, Engine, Equipment and accessories, Heating and air conditioning, Software

Trouble codes named

P2B87

Vehicles listed
BUICK ENCLAVE2021, 2022
CADILLAC XT52021, 2022
CADILLAC XT62021, 2022
CHEVROLET BLAZER2021, 2022
CHEVROLET TRAVERSE2021, 2022
GMC ACADIA2021, 2022

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
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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.
22NA0402022-07-18. Service bulletin. 2022 Enhanced Driver Information Center 8?? (UHS) Digital Display Off Center.
21NA1272022-06-21. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Head Up Display (HUD) Blank, Non-Responsive to Brightness, Aim, or Page Controls, DTC U1518 Set.
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.
21NA2522021-12-27. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Electronic Park Brake Applying Intermittently After Vehicle Shutdown without DTC?s.
21NA1452021-08-09. Service bulletin. This service bulletin provides U157 software update information to correct customer concerns of radio Software related issues.
20NA2372021-02-22. Service bulletin. This service bulletin provides V152 radio software update information to correct customer concerns of various software issues.