N262566020
Service Campaign
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.
Vehicle report
2027 CHEVROLET BOLT EV
Service bulletins
45 bulletinsTechnical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
PIC6629F
Service Bulletin/Repair Instructions
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
PIP4902W
Service Bulletin/Repair Instructions
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIT6544
Service Bulletin/Repair Instructions
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.
PIT6533B
Service Bulletin/Repair Instructions
This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.
PIT6541
Service Bulletin/Repair Instructions
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
Driving & Energy 2026.3
Over The Air
• Fixes to help ensure start reliability and prevent battery drain • Improved charging performance and messages • Improved performance for anti-lock braking system
Telematics 2026.3
Over The Air
• Improved eCall system performance
Infotainment 2026.3
Over The Air
• 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
PIT6533A
Service Bulletin/Repair Instructions
This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.
PIT6512A
Service Bulletin/Repair Instructions
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.
N262559000-01
Service Campaign
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.
662.20
Over The Air
• 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.
N262560510
Service Campaign
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.
662.10
Over The Air
• 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.
PIP6122B
Service Bulletin/Repair Instructions
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 applicable P.I. number, and include the WCC obtained from the SPS data retrieval. TAC will provide further direction after engineering reviews the vehicle-specific data. This information applies only to the listed DTCs and symptom bytes and does not apply if the codes or symptom bytes differ.
PIP6103C
Service Bulletin/Repair Instructions
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
PIP6122A
Service Bulletin/Repair Instructions
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 applicable P.I. number, and include the WCC obtained from the SPS data retrieval. TAC will provide further direction after engineering reviews the vehicle-specific data. This information applies only to the listed DTCs and symptom bytes and does not apply if the codes or symptom bytes differ.
N262559000
Service Campaign
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.
N262560540
Service Campaign
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).
PIP6122
Service Bulletin/Repair Instructions
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 applicable P.I. number, and include the WCC obtained from the SPS data retrieval. TAC will provide further direction after engineering reviews the vehicle-specific data. This information applies only to the listed DTCs and symptom bytes and does not apply if the codes or symptom bytes differ.
PIT6519
Service Bulletin/Repair Instructions
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.
661.30
Over The Air
• 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
PIP6103B
Service Bulletin/Repair Instructions
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
PIC6540J
Service Bulletin/Repair Instructions
This Preliminary information communicates to dealers a procedure to reset the radio.
PIC6540H
Service Bulletin/Repair Instructions
This Preliminary information communicates to dealers a procedure to reset the radio.
PIP6103A
Service Bulletin/Repair Instructions
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
PIC6629E
Service Bulletin/Repair Instructions
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
PIT6393K
Service Bulletin/Repair Instructions
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
PIT6508
Service Bulletin/Repair Instructions
This Preliminary information communicates to the technician the diagnostic direction needed when the customer complains of SuperCruise Subscription Required Message Displayed on Instrument Cluster.
661.20
Over The Air
• 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.
PIT3271Q
Service Bulletin/Repair Instructions
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
661.10
Over The Air
• 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.
PIC6650
Service Bulletin/Repair Instructions
This Preliminary information communicates to the dealer the repair direction recommended by the engineers for correcting this noise complaint.
PIC6649
Service Bulletin/Repair Instructions
This Preliminary Information provides a repair direction to a technician, for a service high voltage system message with DTC P059F.
PIP4902V
Service Bulletin/Repair Instructions
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIP6104
Service Bulletin/Repair Instructions
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
N252541510
Service Campaign
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.
PIT6425D
Service Bulletin/Repair Instructions
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
PIP6103
Service Bulletin/Repair Instructions
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.
PIT6425C
Service Bulletin/Repair Instructions
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
PIP6098
Service Bulletin/Repair Instructions
This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
PIT5214G
Service Bulletin/Repair Instructions
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. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.
PIT6425B
Service Bulletin/Repair Instructions
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
PIT6425A
Service Bulletin/Repair Instructions
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
Reading this report
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.