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Service bulletins for the 2023 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.

574 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
PIE0794A2024-07-18. Service bulletin. ENGINE. This engineering information (EI Lite) asks the technicians that if you encounter a vehicle where customers comment on having oil leaking from the oil pan that drives a warrantable item type of repair on said vehicles, use the Field Product Reporting (FPR) App process.
24-NA-1232024-07-18. Service bulletin. ENGINE. This service bulletin advises the technician that the purge pump part number has changed and limited supply.
16-NA-3832024-07-16. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
PIE07942024-07-11. Service bulletin. ENGINE. This engineering information (EI Lite) asks the technicians that if you encounter a vehicle where customers comment on having oil leaking from the oil pan that drives a warrantable item type of repair on said vehicles, use the Field Product Reporting (FPR) App process.
18-NA-1252024-06-28. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This service bulletin provides information for engine oil life monitor operation calculation.
22-NA-1932024-06-24. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.
18-NA-1252024-06-08. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This service bulletin provides information for engine oil life monitor operation calculation.
23-NA-1232024-05-28. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This service bulletin provides repair information to reprogram the cooling fan to correct a customer concern of a MIL Illuminated.
N2324338912024-05-16. Service campaign. FUEL/PROPULSION SYSTEM; ENGINE; UNKNOWN OR OTHER; POWER TRAIN. Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case.
N2324338902024-05-16. Service campaign. FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER; POWER TRAIN; ENGINE. Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case.
15-00-89-004G2024-05-15. Service bulletin. ENGINE; SUSPENSION; POWER TRAIN. This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
PIP5863B2024-04-15. Service bulletin. EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. This Preliminary information communicates to dealers? information related to a Malfunction Indicator Lamp (MIL) Illuminated due to a U0672 setting. Advises the technician to perform Electric Engine Coolant Pump connection inspections. To clear the code to see if it resets current. If the code resets it advises to utilize Strategy Based Diagnosis. If the code does not reset, it advises to release the vehicle to the customer and that GM is aware of this issue.
16-NA-3832024-03-19. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
PIE07822024-03-07. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information (EI Lite) is requesting technicians use the FPR App process in regard to finding coolant leaking around the Coolant Control Valve (CCV).
22-NA-0742024-02-29. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
19-NA-0442024-02-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
16-NA-2222024-02-21. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
16-NA-3382024-02-17. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
23-NA-2142024-02-14. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides Information on Purge Pump Part Replacement and Purge pump Part Number Interchangeability.
PI1394B2024-02-02. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. This PI bulletin advises the technician on the proper way to install the pistons in an engine.
22-NA-2402024-01-19. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin advises the tech to validate if oil is leaking into the cooling system and to test and verify were to leak is coming from before replacing all the parts that wouldn't apply to the repair.
PIP59402023-12-26. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates a change in service procedure for the thermostat on this enigne.
23-NA-2142023-12-15. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides Information on Purge Pump Part Replacement and Purge Part Number Interchange.
20-NA-1322023-12-15. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
19-NA-2562023-12-09. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides diagnostic aid information/procedures to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine.

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