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Service bulletin 25-NA-021

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11026043
Published by NHTSA2025-12-03
Manufacturer's number25-NA-021
Manufacturer's date2025-06-07
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of Radio Software Update W23E-178.1.2-M174-SQBR6-93.3.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
BUICK ENCLAVE2025
BUICK ENVISION2025
CADILLAC ESCALADE2025
CADILLAC ESCALADE ESV2025
CADILLAC OPTIQ2025
CHEVROLET EQUINOX2025
CHEVROLET SUBURBAN 15002025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2025
CHEVROLET TRAVERSE2025
GMC ACADIA2025
GMC TERRAIN2025
GMC YUKON2025
GMC YUKON XL2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V6120002026-09-24. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
24V9250002024-12-12. FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PIE0829A2026-03-31. Service bulletin. This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the liftgate not opening and/or partially opening.
24-NA-2722025-12-03. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Park Assist False Alerts on Z71 Traverse.
24-NA-2272025-12-02. Service bulletin. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
24-NA-1662025-12-02. Service bulletin. This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn Ethernet Cable Overlay for TCP OnStar Module.
25-NA-0612025-11-15. Service bulletin. This technical bulletin provides a procedure to correct the condition of Driver or Passenger Rear Door Handle Will Not Fold In.
24-NA-2272025-11-15. Service bulletin. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
25-NA-1192025-10-27. Service bulletin. This service bulletin provides information on the Service Safety Restraint Message displayed on the DIC Airbag malfunction indicator illuminated.
25-NA-0442025-10-27. Service bulletin. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
24-NA-2022025-10-27. Service bulletin. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
23-NA-1702025-10-25. Service bulletin. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.