2025 Chevrolet Blazer EVService bulletins

2025 Chevrolet Blazer EV Technical Service Bulletins

361 technical service bulletins (TSBs) are on record for the 2025 Chevrolet Blazer 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.

11031366Apr 16, 2026Other or unknown. Certain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state. Dealers are to reprogram the Telematic Control Module. Important: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest…
11031514Apr 14, 2026Other or unknown. This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and…
11030974Apr 1, 2026Other or unknown. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
11030361Mar 27, 2026Other or unknown. This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener. Engineering is working on a new module.
11030201Mar 17, 2026Other or unknown. This preliminary information is for technicians that will have this message after USB updating the radio. The repair should not involve replacing a module as pressing the reset button will correct this issue.
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.
11029962Mar 6, 2026Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
11029955Mar 5, 2026Other or unknown. A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.
11029949Mar 5, 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
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
11029323Feb 26, 2026Other or unknown. A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.
11029268Feb 23, 2026Other or unknown. This Preliminary Information is to inform dealer technicians to not replace anything at this time in regards to this concern. The vehicle is still safe to drive with no other issues.
11029257Feb 23, 2026Other or unknown. This Preliminary Information communicates the steps on diagnosing certain EV vehicles with a blank IPC screen, no charge or start concerns. Information includes steps to resolve for various symptoms are provided to the dealership technician.
11028937Feb 17, 2026Other or unknown. A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete. Tech is directed to drive a city route to complete the procedure.
11028934Feb 17, 2026Other or unknown. This Preliminary Information is to inform dealer technicians to not replace anything at this time in regards to this concern. The vehicle is still safe to drive with no other issues.
11028858Feb 12, 2026Other or unknown. This preliminary information is to inform technicians that the software level is not available and to not perform a radio update to the software mentioned above.
11028659Feb 2, 2026Other or unknown. This preliminary information is to inform technicians that the software level is not available and to not perform a radio update to the software mentioned above.
11027932Jan 27, 2026Other or unknown. This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication issue after an event like a lightning strike, battery jump started backwards, failure over the air update, etc.
11027916Jan 27, 2026Other or unknown. • Fixes to ensure audio will resume after being unmuted. • Fixes to help ensure proper functionality for FM radio. • Improvements to performance when changing audio sources. • Fixes to help ensure proper functionality for center display.
11027825Jan 27, 2026Other or unknown. Certain vehicles listed above may be missing relevant information regarding the use of snow chains, snow socks, or other traction devices from the Owner’s Manual. Vehicle owners will be mailed an owner’s manual insert to include with other important printed material in the glovebox. For vehicles currently on dealer lots, dealers will include the insert prior to delivery.
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
11027702Jan 15, 2026Other or unknown. This Preliminary Information is to inform technicians to not replace any parts at this time and to use the work around provided. When a fix is available, this PI will be updated to a bulletin.
11027691Jan 15, 2026Other or unknown. This Preliminary Information is to inform technicians to not replace any parts at this time and to use the work around provided. When a fix is available, this PI will be updated to a bulletin.
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.
11027686Jan 12, 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.
11027685Jan 12, 2026Other or unknown. This Preliminary Information is to inform dealer technicians to not replace anything at this time in regards to this concern. The vehicle is still safe to drive with no other issues.
11027614Jan 10, 2026Other or unknown. This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
11027601Jan 8, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11027912Jan 7, 2026Other or unknown. • Improvements to battery health diagnostics. • Fixes for efficiency when using fast charging stations. • Improvements to reliability for climate control and charging. • Improvements to the accuracy of efficiency values. • Improvements to shifting. • Fixes to protect battery health and adjust charge limits.
11027599Jan 7, 2026Other or unknown. This Preliminary information communicates information to direct the dealer or upfitter to GM Upfitter Bulletin 203 for information on installing the Universal Vehicle Module.
11026923Dec 31, 2025Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
11026861Dec 23, 2025Other or unknown. "This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules."
11026600Dec 12, 2025Other 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.
11026599Dec 12, 2025Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
11026496Dec 5, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it. It also informs them to follow the bulletins as necessary to USB update the modules.
11026062Nov 25, 2025Other 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.
11025934Nov 20, 2025Other or unknown. (There may be future updates under this same release number.) This software update includes the following, if your vehicle is equipped: • Fixes to help ensure proper functionality for heating and cooling features. • Improvements to night mode lights for shifting gears. • Fixes for Daytime Running Lamps turning on when set to Off. • Fixes to help prevent erroneous missing key messages on driver display. • Fixes for…
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.
11025933Nov 18, 2025Other or unknown. This software update includes the following, if your vehicle is equipped: • Improvements to battery health diagnostics. • Fixes for efficiency when using fast charging stations. • Improvements to reliability for climate control and charging. • Improvements to the accuracy of efficiency values. • Improvements to shifting. • Fixes to protect battery health and adjust charge limits. During the update process, your…
11025581Nov 13, 2025Other or unknown. This Preliminary information communicates ordering process for the front and rear drive units are on restriction for all listed EV vehicles for engineering review.
11025574Nov 13, 2025Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
11025576Nov 11, 2025Other or unknown. This Preliminary information communicates to GM technicians to not replace any parts at this time if they come across this concern to reset the radio at this time. The PI will be updated or replaced with TSB once a determination has been made.
11025572Nov 11, 2025Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
11024773Oct 30, 2025Other or unknown. This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp) illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
11024671Oct 27, 2025Other or unknown. This software update includes the following, if your vehicle is equipped: •Improves Super Cruise and parking assist behavior •Reduces false alerts and feature interruptions •Fixes to help ensure accurate braking when a vehicle is detected. •Fixes to address erroneous braking. •Improvements to vehicle acceleration response in heavy traffic. •Improvements to braking responsiveness. During the update process, your…
11024704Oct 23, 2025Other or unknown. This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.
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
11024455Oct 17, 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 2025 Chevrolet Blazer EV

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.