# Service bulletin N232421260

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.

- Type: Service bulletin
- NHTSA id: 10244709
- Published by NHTSA: 2023\-11\-02
- Manufacturer's number: N232421260
- Manufacturer's date: 2023\-11\-02
- NHTSA component: UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE \(HPCU\):SOFTWARE; POWER TRAIN; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

## NHTSA's summary

Service Update \- Certain vehicles may have a condition in which a false diagnostic trouble code \(DTC\), U3636 symptom 09, is triggered. This false DTC is resulting in customers experiencing a Malfunction Indicator Lamp \(MIL\) illuminated in the Driver Information Center \(DIC\), a Reduced Propulsion message, and a charging limited to 30% State of Charge. Since this is a false DTC, it can lead to unnecessary battery pack replacements. Dealers are to reprogram the Hybrid Powertrain Control Module 2.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244709-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244709-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Fuel system, Hybrid and electric drive, Transmission and driveline, Fuel tank

## Trouble codes named

U3636

## Vehicles listed

- 2022 CHEVROLET BOLT EUV
- 2020 to 2022 CHEVROLET BOLT EV

JSON: [/v1/bulletins/10244709](/v1/bulletins/10244709)

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