Service bulletins for the 2025 Chevrolet Blazer
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
432 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 23-NA-151 | 2025-05-06. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method. |
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| 07-00-89-037W | 2025-05-05. Service bulletin. UNKNOWN OR OTHER. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs. |
| PIP6021A | 2025-05-05. Service bulletin. UNKNOWN OR OTHER. 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. In these instances, it is advised to perform BECM (Battery Energy Control Module) programming and execute the Manual Reset Shunt process. This applies when ALL of the following DTCs are set as current or history: P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, and U35AF. |
| PIC6587A | 2025-05-05. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates That the active safety systems maybe inoperable and to perform a module reset to correct. |
| 25-NA-087 | 2025-05-02. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs. |
| 25-NA-028 | 2025-05-02. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Blazer EV Turn Signal Fast Flash. |
| N242468490-01 | 2025-05-02. Service campaign. UNKNOWN OR OTHER. Certain vehicles may have missing cavity plugs from the rear chassis harness electrical connector. Dealers are to inspect the rear chassis harness and replace missing harness plugs as necessary. |
| PIT6248A | 2025-04-29. Service bulletin. UNKNOWN OR OTHER. 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. |
| PIT6317B | 2025-04-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates if a customer and service tech encounter a gear display after a radio update, to replace the A11 radio for this concern. |
| PIP5841F | 2025-04-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set. |
| PIT6155D | 2025-04-28. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates information for B19B0 SYM49 falsely setting. |
| PIT6335A | 2025-04-28. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to GM technicians to not replace any parts at this time if they come across this concern. It is due to software and will need to reprogram the A11 radio module to correct this. |
| PIT6151B | 2025-04-28. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to the technician that GM is aware of this concern and to update the Google maps application through the playstore. |
| PIT6105D | 2025-04-28. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians that they will need to perform this step prior to performing any programming on replacement radios. |
| 25-NA-052 | 2025-04-28. Service bulletin. ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system. |
| 24-NA-143 | 2025-04-28. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles. |
| PIC6552E | 2025-04-28. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates how to recover the Image Processing Module. |
| 22-NA-242 | 2025-04-26. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers. |
| 22-NA-096 | 2025-04-26. Service bulletin. UNKNOWN OR OTHER. This informational bulletin provides information for dealers/technicians on Customer Education Bulletin for Google Built In Radio. |
| 13-08-116-001K | 2025-04-25. Service bulletin. ELECTRICAL SYSTEM. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. |
| 24-NA-098 | 2025-04-24. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information. |
| N25-249456 | 2025-04-24. Over-the-air update. UNKNOWN OR OTHER. This software update includes the following, if your vehicle is equipped: •Improves accuracy of service messages for high voltage charging system. •Reduces drain on 12V battery. •Improves performance of charging. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation. |
| 25-NA-067 | 2025-04-24. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Some customers may comment on Service High Voltage Warning Message and vehicle in setting P1C01. |
| 25-NA-065 | 2025-04-24. Service bulletin. STEERING; SERVICE BRAKES; FUEL/PROPULSION SYSTEM. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis. |
| 24-NA-164 | 2025-04-15. Service bulletin. VISIBILITY/WIPER. This bulletin provides information on Wiper Blade Maintenance Tips. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.