2027 Chevrolet Bolt EVService bulletins

2027 Chevrolet Bolt EV Technical Service Bulletins

51 technical service bulletins (TSBs) are on record for the 2027 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.

11037977Oct 5, 2026Other or unknown. Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause a drain on the high voltage and low voltage batteries. Dealers are to program the Battery Energy Control Module then fully charge the high voltage battery to reset the cell balancing software.
11038136Sep 28, 2026Other or unknown. This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
11038132Sep 28, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
11037555Sep 26, 2026Other or unknown. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
11037456Sep 23, 2026Exterior lighting. Certain vehicles listed above may have a condition in which there is a water leak due to a partially seated tail-lamp harness grommet. Dealers will inspect and reseat grommet if necessary.
11037320Sep 10, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
11037249Sep 10, 2026Body and structure. Certain vehicles may have a condition in which the roof to body side structure has a pinhole in it. Dealers are to inspect the right hand side of the roof-to-body joint for pinholes and, if necessary, reseal the area.
11037253Sep 4, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11037757Sep 3, 2026Other or unknown. • Better performance and reliability of wireless phone charging
11037256Sep 2, 2026Other or unknown. This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven. When a repair is available, this PI will be updated.
11036715Aug 28, 2026Other or unknown. This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.
11036690Aug 27, 2026Other or unknown. This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication
11036474Aug 15, 2026Other or unknown. • Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages • Improved performance for anti-lock braking system
11036473Aug 15, 2026Other or unknown. • Improved eCall system performance
11036472Aug 14, 2026Other or unknown. • Updates to enable Plug and Charge at select Supercharger stations through Energy Pass. See your vehicle's mobile app to use this feature • Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras • Better responsiveness for the driver display and rear-view camera
11036222Aug 14, 2026Other or unknown. This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.
11036194Aug 3, 2026Other or unknown. This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
11035116Jul 21, 2026Fuel system. Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause a drain on the high voltage and low voltage batteries. Dealers are to program the Battery Energy Control Module then fully charge the high voltage battery to reset the cell balancing software.
11035391Jul 16, 2026Other or unknown. • Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display messages • This update contains a required software change to help improve the overall software update and diagnostics process.
11034044Jun 25, 2026Steering. Certain vehicles may have a condition in which a fastener may be loose at the steering column to cockpit beam. Dealers will inspect the fasteners and torque them to the proper value.
11034765Jun 24, 2026Other or unknown. This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage message on the IPC, and, when the DTC is current, a no-start condition while the vehicle is in Run/Propulsion mode. If one or more of the listed DTCs are stored in history, technicians are to perform SPS2 Hybrid/EV Battery Data Retrieval per Bulletin 25-NA-044, create a TAC case referencing the…
11034051Jun 24, 2026Other or unknown. • Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics This update includes improvements to your battery health management system. We recommend you charge to 100% as soon as possible for this update to take effect.
11034000Jun 12, 2026Other or unknown. This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage message on the IPC, and, when the DTC is current, a no-start condition while the vehicle is in Run/Propulsion mode. If one or more of the listed DTCs are stored in history, technicians are to perform SPS2 Hybrid/EV Battery Data Retrieval per Bulletin 25-NA-044, create a TAC case referencing the…
11033999Jun 12, 2026Other or unknown. This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
11033796Jun 11, 2026Fuel system. Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause a drain on the high voltage and low voltage batteries. Dealers are to fully charge the high voltage battery to reset the cell balancing software.
11033786Jun 10, 2026Suspension. Certain vehicles may have a condition in which a bolt(s) on the left or right side of the rear wheel hub may be incorrectly torqued. Dealers will inspect, and if necessary, replace the rear wheel hub bolt(s).
11033748Jun 3, 2026Other or unknown. This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage message on the IPC, and, when the DTC is current, a no-start condition while the vehicle is in Run/Propulsion mode. If one or more of the listed DTCs are stored in history, technicians are to perform SPS2 Hybrid/EV Battery Data Retrieval per Bulletin 25-NA-044, create a TAC case referencing the…
11033150May 27, 2026Other or unknown. This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
11032930May 22, 2026Other or unknown. • Improvements to traction and stability control on uneven terrain • Improvements to braking performance on low-traction surfaces • Improvements to assisted braking • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system
11032786May 15, 2026Other or unknown. This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
11032784May 14, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
11032769May 11, 2026Other or unknown. This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
11032767May 11, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
11032624May 8, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
11032554Apr 28, 2026Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
11031719Apr 23, 2026Other or unknown. This Preliminary information communicates to the technician the diagnostic direction needed when the customer complains of SuperCruise Subscription Required Message Displayed on Instrument Cluster.
11031790Apr 10, 2026Other or unknown. • Fixes to help ensure responsiveness for the driver display and rear view camera. • Improvements to reliability for alerts and chimes. • Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras.
11030974Apr 1, 2026Other or unknown. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
11031128Mar 31, 2026Other or unknown. • Improvements to diagnostics and service messaging for battery health, particularly in humid conditions. • Improvements to transmission diagnostics used for shifting. • Improvements to charging system diagnostics. • Fixes to help protect EV adapter from overheating while charging.
11030972Mar 31, 2026Other or unknown. This Preliminary information communicates to the dealer the repair direction recommended by the engineers for correcting this noise complaint.
11030168Mar 10, 2026Other or unknown. This Preliminary Information provides a repair direction to a technician, for a service high voltage system message with DTC P059F.
11030092Mar 9, 2026Other or unknown. This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
11030091Mar 9, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11029444Mar 3, 2026Other or unknown. Certain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified. Dealers are to provide the customer with the latest design charging adapter.
11029950Mar 2, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
11029452Feb 27, 2026Other or unknown. This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
11027697Jan 16, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
11027701Jan 14, 2026Other or unknown. This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
11025755Nov 20, 2025Other or unknown. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center.
11024460Oct 18, 2025Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's

← All problems reported for the 2027 Chevrolet Bolt EV

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.