# 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.

- Type: Service bulletin
- NHTSA id: 11026043
- Published by NHTSA: 2025\-12\-03
- Manufacturer's number: 25\-NA\-021
- Manufacturer's date: 2025\-06\-07
- NHTSA component: ELECTRICAL 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026043-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026043-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2025 BUICK ENCLAVE
- 2025 BUICK ENVISION
- 2025 CADILLAC ESCALADE
- 2025 CADILLAC ESCALADE ESV
- 2025 CADILLAC OPTIQ
- 2025 CHEVROLET EQUINOX
- 2025 CHEVROLET SUBURBAN 1500
- 2025 CHEVROLET TAHOE
- 2025 CHEVROLET TRAVERSE
- 2025 GMC ACADIA
- 2025 GMC TERRAIN
- 2025 GMC YUKON
- 2025 GMC YUKON XL

## Recalls for the same vehicles and component

- [26V612000](/recalls/nhtsa/26V612000.md), 2026-09-24: ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
- [24V925000](/recalls/nhtsa/24V925000.md), 2024-12-12: FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM

## Other bulletins for the same vehicles and component

- [PIE0829A](/bulletins/11030339.md), 2026-03-31, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. 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\-272](/bulletins/11026032.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM; BACK OVER PREVENTION: WARNINGS. This technical bulletin provides repair information to correct a customer concern of Park Assist False Alerts on Z71 Traverse.
- [24\-NA\-227](/bulletins/11025996.md), 2025-12-02, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
- [24\-NA\-166](/bulletins/11025974.md), 2025-12-02, Service bulletin: WHEELS; ELECTRICAL SYSTEM. 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\-061](/bulletins/11025554.md), 2025-11-15, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. This technical bulletin provides a procedure to correct the condition of Driver or Passenger Rear Door Handle Will Not Fold In.
- [24\-NA\-227](/bulletins/11025553.md), 2025-11-15, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Vibration Rattle or Boom at 1800 to 2000 RPM.
- [25\-NA\-119](/bulletins/11024500.md), 2025-10-27, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM. This service bulletin provides information on the Service Safety Restraint Message displayed on the DIC Airbag malfunction indicator illuminated.
- [25\-NA\-044](/bulletins/11024498.md), 2025-10-27, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
- [24\-NA\-202](/bulletins/11024496.md), 2025-10-27, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard \(NACS\) DC Adapter Warranty Claim Information.
- [23\-NA\-170](/bulletins/11024486.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.

JSON: [/v1/bulletins/11026043](/v1/bulletins/11026043)

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