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Service bulletins for the 2018 Chevrolet Bolt EV

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.

819 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
22-NA-1192022-08-03. 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.
16-NA-3092022-08-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin describes the proper way to stow the charge cord during PDI using the Velcro strap in the trunk.
22-NA-1142022-07-01. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information on Forklift and Vehicle Hoist Requirements to Support Electric Vehicle (EV) High Voltage Battery Handling.
N212345750012022-06-27. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. High Voltage Battery Software Update
N2123457502022-06-27. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. High Voltage Battery Software Update
PIC6449A2022-06-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to the dealers on the process to be able to order a replacement High Voltage battery pack for a vehicle that has a High Voltage battery battery concern and is not on the current open recall list. This document will add in advising the dealers to contact TAC with needed information so TAC can review the data to verify that the vehicle need a High Voltage battery and then TAC will release the High voltage battery so the dealer can repair the vehicle for the customer. Also the Administrative Details have the direction for the consultants to be able to follow and handle the case information as it comes in.
22NA0122022-05-31. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. This service bulletin provides information for dealers/technicians on Stone Chip/Membrane Damage, Broken Connector and/or Sensor Retaining Tabs, and/or Paint Damage of Park Assist Sensors.
22NA0012022-05-31. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides diagnostic aid information for dealers/technicians on HPCM2 Module Records Inaccurate Freeze Frame / Failure Record Data.
17NA0972022-05-31. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides a procedure to apply butyl tape to the object sensing alert module brackets to correct a side blind zone not working correctly or Side Mirror Notification condition.
21-NA-2612022-05-11. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides a procedure for dealers/technicians to follow on vehicles with a charge limited to 80% After Battery Pack Replaced for Recall N212343881, N212345941 or N212345943.
21-NA-2612022-04-30. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides a procedure for dealers/technicians to follow on vehicles with a charge limited to 80% After Battery Pack Replaced for Recall N212343881 or N212345941.
21-NA-2612022-04-01. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides a procedure for dealers/technicians to follow on vehicles with a charge limited to 80% After Battery Pack Replaced for Recall N212343881 or N212345941.
21-NA-2612022-03-30. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides a procedure for dealers/technicians to follow on vehicles with a charge limited to 80% After Battery Pack Replaced for Recall N212343881 or N212345941.
PIC64502022-03-14. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a process to correct the concern of Unable to contact OnStar after the 3G EOL on 2015-2022 model year vehicles in the United States.
PIC64492022-02-14. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY. This Preliminary information communicates to the dealers on the process to be able to order a replacement High Voltage battery pack for a vehicle that has a High Voltage battery battery concern and is not on the current open recall list. This document will add in advising the dealers to contact TAC with needed information so TAC can review the data to verify that the vehicle need a High Voltage battery and then TAC will release the High voltage battery so the dealer can repair the vehicle for the customer. Also the Administrative Details have the direction for the consultants to be able to follow and handle the case information as it comes in.
21NA2612021-12-27. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on charge limited to 80% After Battery Pack Replaced for Recall N212343881 or N212345941.
20NA1322021-12-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
PIT5698B2021-09-13. Service bulletin. ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
PIC5650J2021-09-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
21NA1242021-07-06. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
20NA1322021-05-03. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
150603002H2021-04-16. 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.
17-NA-3412021-04-16. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD. 120V Portable Charge Cord is Inoperative or Charges Vehicle Intermittently Condition Some customers may comment that the 120V portable charge cord does not work or that the vehicle does not charge completely or may charge intermittently. Cause The cause of the condition may be the customer’s power outlet is faulty. Correction Test the 120V Portable Charge Cord.
070849020M2021-04-16. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER:SENSOR/SENDING UNIT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. IPC Odometer Programming Method Quick Reference Guide
16-NA-4072021-04-14. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Information on Chassis Control Module (CCM) Receives Invalid Data and Sets DTC U0422 The Technician may find DTCs U0422 set. The Technician may also find the following DTCs set. • U1534 • U1538 Information Based on analysis with the BCM team, during vehicle startup (on occasion) the PEPS module arbitration along with high bus traffic leads to the BCM setting the door open switch virtual device availability (VDA) to unavailable. The BCM does not update the VDA back to Available until the door switch changes state (this signal is event based as opposed to periodic). The ICCM sets the U0422 DTC after 1 second of either the door ajar VDA or door open VDA being unavailable. Correction Ignore CCM U0422 DTC (no service necessary) unless it is a current/active code or is accompanied by associated BCM faults U1534 or U1538.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.