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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: Lighting are shown. Show all

Bulletins, newest first
23-NA-0862025-02-20. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
01-08-42-001Q2025-02-11. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
23-NA-0862024-12-04. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
23-NA-0862024-09-21. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
22-NA-2442024-05-30. Warranty extension. ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
23-NA-0862024-05-15. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
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.
PIT5673A2024-01-29. Service bulletin. EXTERIOR LIGHTING; EXTERIOR LIGHTING:HEADLIGHTS. This Preliminary information communicates information for Intellibeam headlamp inoperative and to inspect the low speed data line.
02-08-42-001J2024-01-19. Service bulletin. EXTERIOR LIGHTING. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
21-NA-1352023-11-29. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
23-NA-0862023-11-20. Service bulletin. EXTERIOR LIGHTING; EQUIPMENT. This informational bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
22-NA-0532023-07-14. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EXTERIOR LIGHTING. This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories.
23-NA-0862023-05-10. Service bulletin. EXTERIOR LIGHTING. This informational bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
01-08-42-001P2023-05-09. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
01-08-42-001O2023-02-28. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.

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