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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
N2424788602025-02-10. Service campaign. ENGINE. Customer Satisfaction Program. On certain vehicles, the Virtual Cockpit Unit (VCU) may not display controls for heated seats. Dealers will reprogram the body control module.
PIE0753G2025-02-08. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
25-NA-0012025-02-06. Service bulletin. POWER TRAIN. This service bulletin provides repair information to correct a customer concern of a transmission fluid leak.
PIT5832U2025-02-03. 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.
PIT5985J2025-02-03. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.
PIT63222025-02-03. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that a vehicle may be encountered with a fast flashing turn signal. The dealer technician is directed to perform no repairs at this time. Engineering is working on a solution to this concern.
PIT6319A2025-02-03. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that a customer may experience a service high voltage message with a loss of heat. The technician may find P1C01 in history. The technician is advised that updated software will be released in the future. The dealer should advise the customer to cycle the ignition on and off to temporarily resolve the concern.
PIE0794D2025-01-31. Service bulletin. ENGINE. This engineering information (EI Lite) ends the need for gathering further information using the Field Product Reporting (FPR) App process for vehicles where customers comment on having oil leaking from the oil pan that drives a warrantable item type of repair on said vehicles.
24-NA-2392025-01-30. Service bulletin. ELECTRICAL SYSTEM; SEATS; STRUCTURE:BODY; STEERING; ENGINE. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
21-NA-2402025-01-30. Service bulletin. ENGINE. This service bulletin provides diagnostic repair information to correct an oil leak in the engine.
18-NA-1802025-01-30. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
24-NA-1432025-01-24. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
24-NA-1132025-01-23. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.
24-NA-1132025-01-23. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.
09-06-04-026Z2025-01-23. Service bulletin. ENGINE; POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
PIC6557C2025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates instructions if a Super Cruise unavailable message is displayed.
PIT5832T2025-01-20. 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.
PIT5985H2025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.
PIT6044M2025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that a Software update is in the works and to disconnect the 12 volt battery to clear the codes.
PIT63192025-01-20. Service bulletin. FUEL/PROPULSION SYSTEM. This Preliminary information communicates that a customer may experience a service high voltage message with a loss of heat. The technician may find P1C01 in history. The technician is advised that updated software will be released in the future. The dealer should advise the customer to cycle the ignition on and off to temporarily resolve the concern.
PIT6219B2025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates that a dealer may find the underhood beauty covers missing. The dealer is advised that these are missing by design and should not be ordered for the vehicle.
PIC6556H2025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
PIT63152025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates information to direct the dealer or upfitter to GM Upfitter Bulletin 203 for information on installing the Universal Vehicle Module.
PIT6274B2025-01-20. Service bulletin. UNKNOWN OR OTHER. This Preliminary information communicates to dealership technicians that if they have a customer with this issue, do not replace any parts until the repair is available.
PIT6257A2025-01-20. Service bulletin. FUEL/PROPULSION SYSTEM. This Preliminary information communicates that a vehicle may have P0534 set. There is a possibility that the circuits may have been swapped for temperature sensors 5 and 6. The technician is instructed to inspect the circuits at sensors 5 and 6 and if they are incorrect to move them to the correct terminals at the Battery Energy Control Module and to label the circuits.

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