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Service bulletin 19NA211

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 id10166634
Published by NHTSA2019-10-28
Manufacturer's number19NA211
Manufacturer's date2019-09-13
NHTSA componentELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

NHTSA's summary

This Bulletin provides information to diagnose a Loss of Propulsion or No Start with the MIL ON and DTC P0A45 or P1B04 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, Hybrid and electric drive, High-voltage battery

Trouble codes named

P0A45, P1B04

Vehicles listed
CHEVROLET MALIBU2016, 2017, 2018
CHEVROLET VOLT2016, 2017, 2018

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
18NA1862019-10-28. Service bulletin. This Bulletin provides information to diagnose a Loss of Propulsion or No Start with the MIL ON and DTC P0A3F or P1B03 set.
18NA0162018-06-04. Service bulletin. This Bulletin provides ECM reprogramming information to Correct DTC P3260 and P0AC4.
PIC6194E2018-01-16. Service bulletin. This Preliminary Information communication advises the technician the High Voltage Drive Motor Battery, for the 2016-2018 Chevrolet Malibu Hybrid has been placed on a parts restriction. Dealer will need to call General Motors Technical Assistance Center.
GCUS-3-7732017-12-22. Service bulletin. 16055 Customer Satisfaction Program. Certain vehicles may exhibit a condition where the driver notices a ?Propulsion Power is Reduced? message in the driver information center. This condition is sometimes accompanied by the diagnostic trouble code P0A7F or a significant decrease in actual electric vehicle range. The driver may also notice the engine running at consistently higher power than normal to propel the vehicle and acceleration is slower than expected. Dealers are to reprogram the hybrid powertrain control module 2.
PIC6231A2017-11-14. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles EV range is less than expected, or the estimated EV range on the display is greater than the actual range achieved. Dealer should walk the customer though using the energy screen. The energy screen will help the customer understand were there battery energy is being used.