# Service bulletin 24\-NA\-128

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: 11009470
- Published by NHTSA: 2024\-10\-30
- Manufacturer's number: 24\-NA\-128
- Manufacturer's date: 2024\-09\-26
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

This service bulletin provides information for dealers/technicians on Powertrain Control Module K45 Software Update for SDAC \(Serial Data Authentication Configuration\) Failures.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11009470-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11009470-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Vehicles listed

- 2024 CHEVROLET TRAVERSE
- 2024 GMC ACADIA

## Other bulletins for the same vehicles and component

- [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\-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\-074](/bulletins/11024333.md), 2025-10-16, Service bulletin: ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Some customers may comment on rear body structure stop lamp or rear closure signal lamp may be totally inoperative or staying illuminated.
- [24\-NA\-166](/bulletins/11020422.md), 2025-07-08, Service bulletin: 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.
- [24\-NA\-244](/bulletins/11019745.md), 2025-06-26, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin provides a procedure to program the PCM to latest software to correct a condition of cold start rough idle w/DTC P050D.
- [22\-NA\-242](/bulletins/11019545.md), 2025-06-16, Service bulletin: ELECTRICAL SYSTEM. This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.
- [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- [24\-NA\-142](/bulletins/11019379.md), 2025-06-07, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; ELECTRICAL SYSTEM; STEERING. This technical bulletin provides repair information to correct a customer concern of Steering Wheel Oscillation while in Super Cruise Mode.
- [24\-NA\-229](/bulletins/11019017.md), 2025-06-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
- [24\-NA\-193](/bulletins/11019013.md), 2025-06-03, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This service bulletin provides repair information on software release Update W52E\-176.1.2\-M170\-SQBR5\-250.2 to correct customer concern of radio software issues.

JSON: [/v1/bulletins/11009470](/v1/bulletins/11009470)

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