2020 Chevrolet Bolt EV Technical Service Bulletins

601 technical service bulletins (TSBs) are on record for the 2020 Chevrolet Bolt EV. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11000158May 1, 2024Other or unknown, Seats. This service bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability.
• 11000164Apr 30, 2024Electrical system. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
• 11000162Apr 30, 2024Electrical system. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
• 11000160Apr 30, 2024Other or unknown. This service bulletin provides information on proper use of floor mats.
• 11000157Apr 26, 2024Electrical system. This service bulletin provides information for dealers/technicians on Over The Air (OTA) and In Market Enhancement (IME) FAQs.
• 11000120Apr 26, 2024Electrical system, Other or unknown. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
• 11000119Apr 26, 2024Suspension, Engine, Transmission and drivetrain. This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
• 10253770Apr 18, 2024Wheels. This service bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).
• 10254014Apr 16, 2024Electrical system, Equipment. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
• 10253527Apr 10, 2024Equipment, Electrical system. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 10253526Apr 8, 2024Equipment, Wheels. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
• 10252968Apr 8, 2024Electrical system. Service Update. Certain vehicles may have a condition in which a diagnostic trouble code (DTC) is set. IMPORTANT: If the vehicle comes in with the DTC U3620-U362E and U3630-U3636, with symptom 17 ALREADY set, go to SI and follow the published SI diagnostic/repair procedures. This field action DOES NOT apply to symptom 09. After above repairs are performed, come back to this field action to get the required warranty…
• 10252776Apr 5, 2024Electrical system, Other or unknown. Service Update Ended - This message is to inform dealers that Service Update N232432430 released on March 26, 2024 through GlobalConnect message GCUS-3-3188 has ended.
• 10252566Apr 3, 2024Electrical system, Transmission and drivetrain. Service Update - Certain vehicles may have a condition in which a diagnostic trouble code (DTC), U3620-U362E or U3630-U3636, symptom 17, is triggered. This DTC is resulting in customers experiencing a Malfunction Indicator Lamp (MIL) illuminated in the Driver Information Center (DIC), Reduced Propulsion with corresponding DIC message, and a charging limited to 30% State of Charge.
• 10252735Mar 28, 2024Electrical system. This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
• 10252774Mar 26, 2024Electrical system, Equipment. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 10252070Mar 26, 2024Other or unknown, Electrical system. Service Update - Certain vehicles may have a condition in which the internal mileage counter has been reset with a subsequent Hybrid/EV Powertrain Control Module 2 reprogramming event causing the HV Battery SOC to be limited to 80% beyond the required 6,213mi (10,000km). Dealers are to verify mileage, contact Techline and reprogram the Hybrid/EV Powertrain Control Module 2.
• 10252128Mar 22, 2024Electrical system, Equipment. This service bulletin provides diagnostic and repair information for instances when DTC P0BBD may set.
• 10252126Mar 21, 2024Equipment. This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
• 10251911Mar 13, 2024Electrical system. This service bulletin provides a procedure to correct the condition of Charge Limited to 80% After Reaching 10,000 km (6,213 miles) for Recall N212345944 or N212345945.
• 10251888Mar 11, 2024Equipment. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 10251889Mar 10, 2024Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10251633Mar 6, 2024Electrical system, Equipment. This service bulletin provides a procedure to correct the condition of Charge Limited to 80% After Reaching 10,000 km (6,213 miles) for Recall N212345944 or N212345945.
• 10253061Mar 4, 2024Brakes, Fuel system. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
• 10251635Mar 4, 2024Equipment. This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
• 10251513Mar 1, 2024Other or unknown. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10251704Feb 21, 2024Forward collision avoidance. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
• 10250776Feb 20, 2024Electrical system, Equipment. This service bulletin provides information on Forklift and Vehicle Hoist Requirements to Support Electric Vehicle (EV) High Voltage Battery Handling.
• 10250777Feb 19, 2024Equipment, Electrical system. The service bulletin provides warranty information on High Voltage Battery Safety Recall Replacement Parts.
• 10250564Feb 16, 2024Electrical system, Equipment. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
• 10250578Feb 15, 2024Electrical system, Equipment. This service bulletin provides diagnostic and repair information for instances when DTC P0BBD may set.
• 10250348Feb 1, 2024Electrical system, Equipment. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
• 10250006Jan 31, 2024Equipment. This Preliminary information communicates to dealers of a known issue with failed map update
• 10250276Jan 30, 2024Electrical system, Equipment. This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.
• 10250278Jan 29, 2024Equipment, Electrical system. This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present on network communication circuits.
• 10250275Jan 29, 2024Equipment, Electrical system. This service bulletin provides information on Forklift and Vehicle Hoist Requirements to Support Electric Vehicle (EV) High Voltage Battery Handling.
• 10250268Jan 25, 2024Electrical system, Equipment. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
• 10250265Jan 23, 2024Equipment, Electrical system. This service bulletin provides Hybrid/EV Charging Issue Information and Data Collection Worksheet.
• 10250244Jan 18, 2024Body and structure. This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
• 10249590Jan 16, 2024Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10249980Jan 12, 2024Equipment. This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be…
• 10249011Jan 12, 2024Exterior lighting. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
• 10249535Jan 8, 2024Electrical system. This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
• 10249013Jan 8, 2024Electrical system, Equipment. This Warranty Administration Bulletin Provides High Voltage Battery Exchange Process Information.
• 10248727Dec 31, 2023Equipment, Electrical system. The service bulletin provides warranty information on High Voltage Battery Safety Recall Replacement Parts.
• 10248725Dec 31, 2023Electrical system, Equipment. This Warranty Administration Bulletin Provides High Voltage Battery Exchange Process Information.
• 10249295Dec 18, 2023Equipment. This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2.
• 10249294Dec 15, 2023Other or unknown, Electrical system. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
• 10247552Dec 12, 2023Equipment. This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
• 10247192Dec 8, 2023Equipment, Engine cooling, Electrical system. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.

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