2027 Chevrolet Bolt EV TSBs

Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause...

Certain vehicles listed above may have a condition in which there is a water leak due to a partially seated tail-lamp harness grommet.

Improved vehicle performance when driving in Reverse on slippery surfaces Better One-Pedal Driving performance ...

Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause...

Additional protection for battery health and to help prevent battery drain Improved charging messaging in the driver...

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

Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause...

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

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

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

This Preliminary Information provides a repair direction to a technician, for a service high voltage system message with...

This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...

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

This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...

This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...

This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...

This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.

This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with...

Improved eCall system performance

This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM.

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical...

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

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

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

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

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

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

Fixes to help ensure responsiveness for the driver display and rear view camera.

This Preliminary information communicates to the technician the diagnostic direction needed when the customer complains...

Updates to enable Plug and Charge at select Supercharger stations through Energy Pass.

This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage...

This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage...

This information addresses a potential software anomaly that may cause a MIL illumination, a Service High Voltage...

This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications.

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

This Preliminary Information communication provides information to the technician about vehicles that have had multiple...

This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven.

This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost...

This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost...

Better performance and reliability of wireless phone charging

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.

Fixes to help ensure start reliability and prevent battery drain Improved charging performance and messages Improved...

Improvements to traction and stability control on uneven terrain Improvements to braking performance on low-traction...

Certain vehicles may have a condition in which the roof to body side structure has a pinhole in it.

Certain vehicles may have a condition in which a fastener may be loose at the steering column to cockpit beam.

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.

Improvements to diagnostics and service messaging for battery health, particularly in humid conditions.

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

This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and...