# Service bulletin 18125

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: 10143410
- Published by NHTSA: 2018\-08\-06
- Manufacturer's number: 18125
- Manufacturer's date: 2018\-05\-03
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

## NHTSA's summary

18125 \- Customer Satisfaction Program. Certain vehicles may have a condition where the software will not detect the difference in the state of charge between the cell groups of the battery and over predict the indicated battery range. The current software may not provide sufficient warning prior to a battery cell low range condition, which may result in a loss of propulsion. Only certain vehicles will experience the battery low voltage cell condition. Reprogram hybrid powertrain control module 2.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143410-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143410-0001.pdf)

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

## Components

Electrical system, 12\-volt battery, Software

## Vehicles listed

- 2017 to 2018 CHEVROLET BOLT EV

## Other bulletins for the same vehicles and component

- [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [PIP5632G](/bulletins/10230683.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 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.
- [PIP4902Q](/bulletins/10230682.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 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.
- [22\-NA\-119](/bulletins/10217072.md), 2022-08-03, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. The service bulletin provides warranty information on High Voltage Battery Safety Recall Replacement Parts.
- [N21234575001](/bulletins/10214723.md), 2022-06-27, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. High Voltage Battery Software Update
- [N212345750](/bulletins/10214720.md), 2022-06-27, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. High Voltage Battery Software Update
- [20NA132](/bulletins/10205059.md), 2021-12-20, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
- [17297\-01](/bulletins/10191036.md), 2021-04-29, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Certain 2017 model year Chevrolet Bolt EV vehicles may have a condition in which the cells within the battery pack have low voltage. This condition is related to the state of charge of the cell group. Eventually, the difference in the state of charge of the cell groups \(average vs. minimum\) may exceed a threshold. Correction Replace the high voltage battery pack.
- [150603002H](/bulletins/10190339.md), 2021-04-16, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Original Equipment Batteries Part Number and ACDelco Replacement Battery Approved Warranty Part Numbers Correct battery cold cranking amperage \(CCA\) ratings and type are critical for proper test results when using the EL\-50313. Access to the battery specification label, which contains the OEM part number and CCA rating and type, may be difficult without component removal. Refer to the table below for the original equipment ratings and part numbers used to set up a proper battery test. There has been some confusion as to the correct ACDelco battery warranty replacement. Refer to the table below for the correct battery warranty replacement. The correct ACDelco battery warranty replacement in the catalog is designated by the "Original Equipment Replacement" note in the description field.
- [16NA019](/bulletins/10186058.md), 2021-02-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.

JSON: [/v1/bulletins/10143410](/v1/bulletins/10143410)

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