Chevrolet Bolt EV Service Bulletins (2027)

51 manufacturer communications on file.

• June 24, 2026•Document ID: 11034765

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6122B

  Date Added:

  July 7, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11034765-0001.pdf↗
• June 24, 2026•Document ID: 11034051

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  662.10

  Date Added:

  June 25, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • 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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11034051-0001.pdf↗
• June 12, 2026•Document ID: 11034000

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6122A

  Date Added:

  June 18, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11034000-0001.pdf↗
• June 12, 2026•Document ID: 11033999

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6103C

  Date Added:

  June 18, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.

  Associated Products (10)

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  Associated Documents

  • DownloadMC-11033999-0001.pdf↗
• June 11, 2026•Document ID: 11033796

  Service Campaign
  FUEL/PROPULSION SYSTEM

  Mfr Comm. #:

  N262559000

  Date Added:

  June 11, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11033796-0001.pdf↗
• June 10, 2026•Document ID: 11033786

  Service Campaign
  SUSPENSION

  Mfr Comm. #:

  N262560540

  Date Added:

  June 10, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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).

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11033786-0001.pdf↗
• June 3, 2026•Document ID: 11033748

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6122

  Date Added:

  June 8, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11033748-0001.pdf↗
• May 27, 2026•Document ID: 11033150

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6519

  Date Added:

  June 2, 2026

  Manufacturer:

  CHEVROLET

  Summary

  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.

  Associated Products (170)

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  Associated Documents

  • DownloadMC-11033150-0001.pdf↗
• May 22, 2026•Document ID: 11032930

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.30

  Date Added:

  May 26, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • 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

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11032930-0001.pdf↗
• May 15, 2026•Document ID: 11032786

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6103B

  Date Added:

  May 19, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.

  Associated Products (10)

  2027 Chevrolet Bolt EV2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Chevrolet Blazer2025 Cadillac Lyriq2025 Cadillac Optiq2025 Chevrolet Blazer2024 Cadillac Lyriq2024 Chevrolet Blazer
  Associated Documents

  • DownloadMC-11032786-0001.pdf↗
• May 14, 2026•Document ID: 11032784

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6540J

  Date Added:

  May 19, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to dealers a procedure to reset the radio.

  Associated Products (153)

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  Associated Documents

  • DownloadMC-11032784-0001.pdf↗
• May 11, 2026•Document ID: 11032769

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIP6103A

  Date Added:

  May 19, 2026

  Manufacturer:

  CADILLAC

  Summary

  This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru TAC.

  Associated Products (7)

  2027 Chevrolet Bolt EV2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2025 Cadillac Lyriq2025 Cadillac Optiq2024 Cadillac Lyriq
  Associated Documents

  • DownloadMC-11032769-0001.pdf↗
• May 11, 2026•Document ID: 11032767

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6540H

  Date Added:

  May 19, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to dealers a procedure to reset the radio.

  Associated Products (153)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer+ 133 more
  Associated Documents

  • DownloadMC-11032767-0001.pdf↗
• May 8, 2026•Document ID: 11032624

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6629E

  Date Added:

  May 13, 2026

  Manufacturer:

  GMC

  Summary

  This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display

  Associated Products (91)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Lyriq2026 Cadillac Vistiq2026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Corvette2026 Chevrolet Equinox2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Trailblazer2026 Chevrolet Traverse+ 71 more
  Associated Documents

  • DownloadMC-11032624-0001.pdf↗
• April 28, 2026•Document ID: 11032554

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6393K

  Date Added:

  May 8, 2026

  Manufacturer:

  CADILLAC

  Summary

  This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.

  Associated Products (60)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Envision2026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Chevrolet Blazer2026 Chevrolet Colorado2026 Chevrolet Corvette2026 Chevrolet Equinox2026 Chevrolet Silverado2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 Chevrolet Traverse+ 40 more
  Associated Documents

  • DownloadMC-11032554-0001.pdf↗
• April 23, 2026•Document ID: 11031719

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT6508

  Date Added:

  April 29, 2026

  Manufacturer:

  GMC

  Summary

  This Preliminary information communicates to the technician the diagnostic direction needed when the customer complains of SuperCruise Subscription Required Message Displayed on Instrument Cluster.

  Associated Products (18)

  2027 Chevrolet Bolt EV2026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Chevrolet Suburban2026 Chevrolet Tahoe2026 GMC Hummer EV Pickup2026 GMC Hummer EV SUV2026 GMC Yukon2026 GMC Yukon XL2025 Cadillac Escalade2025 Cadillac Escalade ESV2025 Cadillac Escalade IQ2025 Chevrolet Suburban2025 Chevrolet Tahoe2025 GMC Yukon2025 GMC Yukon XL
  Associated Documents

  • DownloadMC-11031719-0001.pdf↗
• April 10, 2026•Document ID: 11031790

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.20

  Date Added:

  April 30, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • 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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11031790-0001.pdf↗
• April 1, 2026•Document ID: 11030974

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIT3271Q

  Date Added:

  April 7, 2026

  Manufacturer:

  CADILLAC

  Summary

  This preliminary information communicates information about how to determine if a wheel and tires size change is available.

  Associated Products (736)

  2027 Chevrolet Bolt EV2026 Buick Enclave2026 Buick Encore2026 Buick Encore GX2026 Buick Envision2026 Buick Envista2026 Cadillac Celestiq2026 Cadillac CT42026 Cadillac CT52026 Cadillac Escalade2026 Cadillac Escalade ESV2026 Cadillac Escalade IQ2026 Cadillac Escalade IQL2026 Cadillac Lyriq2026 Cadillac Optiq2026 Cadillac Vistiq2026 Cadillac XT42026 Cadillac XT52026 Cadillac XT62026 Chevrolet Blazer+ 716 more
  Associated Documents

  • DownloadMC-11030974-0001.pdf↗
• March 31, 2026•Document ID: 11031128

  Over The Air
  UNKNOWN OR OTHER

  Mfr Comm. #:

  661.10

  Date Added:

  April 7, 2026

  Manufacturer:

  CHEVROLET

  Summary

  • 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.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11031128-0001.pdf↗
• March 31, 2026•Document ID: 11030972

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  PIC6650

  Date Added:

  April 7, 2026

  Manufacturer:

  CHEVROLET

  Summary

  This Preliminary information communicates to the dealer the repair direction recommended by the engineers for correcting this noise complaint.

  Associated Products (1)

  2027 Chevrolet Bolt EV
  Associated Documents

  • DownloadMC-11030972-0001.pdf↗