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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

Bulletins, newest first
PIP4902T2025-08-22. Service bulletin. UNKNOWN OR OTHER. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIT6394B2025-08-22. Service bulletin. UNKNOWN OR OTHER. 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.
PIT6247A2025-08-22. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates direction to find information at www.gmupfitter.com for Police and Special Service Vehicles.
PIT6235B2025-08-22. Service bulletin. UNKNOWN OR OTHER. A vehicle may arrive at the dealer with various symptoms or codes. Dealer is advised to inspect a wiring harness for chaffing at the cowl.
PIT6059C2025-08-22. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera and dealers to replace the camera.
PIC5650M2025-08-12. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.
PIT64132025-07-30. Service bulletin. UNKNOWN OR OTHER. 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.
PIT6393B2025-07-30. Service bulletin. UNKNOWN OR OTHER. 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.
PIT6274C2025-07-24. Service bulletin. UNKNOWN OR OTHER. This preliminary information PI states to not replace anything at the dealership for this concern and engineering is investigating.
PIT6274C2025-07-24. Service bulletin. UNKNOWN OR OTHER. This preliminary information PI states to not replace anything at the dealership for this concern and engineering is investigating.
PIP5601C2025-07-23. Service bulletin. UNKNOWN OR OTHER. This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
PIT5074S2025-07-23. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIP5601B2025-07-23. Service bulletin. UNKNOWN OR OTHER. This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
N2525028902025-07-16. Service campaign. ENGINE. Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the front electric drive transmission module.
PIT64112025-07-14. Service bulletin. UNKNOWN OR OTHER. This information provides software update information for the K73 Telematics module to correct the symptoms described.
PIT6393A2025-07-14. Service bulletin. UNKNOWN OR OTHER. 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.
15-NA-0102025-07-07. Service bulletin. ENGINE. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
PIT64042025-07-01. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates the DTC's setting in the SDGM are false, steps to resolve and not to replace the module.
PIT5832V2025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
PIT64012025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates a diagnostic tip on how to resolve a issue of the horn sounding when vehicle doors are being closed and the key in vehicle reminder set to off.
PIT63932025-06-30. Service bulletin. UNKNOWN OR OTHER. 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.
PIT6362D2025-06-30. Service bulletin. UNKNOWN OR OTHER. This preliminary information communicates to dealership technicians various radio concerns are all related to software and Engineering is currently working on a design improvement.
PIP60722025-06-30. Service bulletin. UNKNOWN OR OTHER. This Preliminary Information communicates possible conditions they may encounter during HVAC flushing procedures on some vehicles due to adapter compatibility concerns that should be resolved soon.
PIT6180A2025-06-29. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.
PIP4902S2025-06-24. Service bulletin. UNKNOWN OR OTHER. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.