# Over\-the\-air update 663.30

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: Over\-the\-air update
- NHTSA id: 11037747
- Published by NHTSA: 2026\-10\-02
- Manufacturer's number: 663.30
- Manufacturer's date: 2026\-09\-03
- Campaign id or software version: 663.30
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: CGM, EBCM, AMP, ACP, RDCM, BCM, TPIM, LRR, VCU, PTM, SRR, VICM, WCM, VLM: CGM\-GTW \(Communication Gateway Module\), EBCM \(Electronic Brake Control Module\), AMP \(Amplifier\), ACP3\_MCU \(ADAS Compute Platform 3 \- Microprocessor Control Unit\), ACP3\_SOC \(ADAS Compute Platform 3 \- System On A Chip\), RDCM \(Rear Driver Control Module\), BCM \(Body Control Module\), TPIM \(Traction Power Inverter Module\), LRR \(Long Range Radar\), VCU \(Virtual Cockpit Unit\), PTM \(Power Tailgate Module\), SRR \(Short Range Radar\), VICM \(Vehicle Integration Control Module\), WCM \(Wireless Charger Module\),

## NHTSA's summary

• After this update, you may need to turn your Turn Signal Activated View setting back on • Fixes to help ensure start reliability and prevent battery drain • Updates to enable memory seat buttons to be linked to a user profile. Up to two user profiles can be linked to your vehicle's memory seat buttons. • Improved charging performance and messages • Better performance and reliability of wireless phone charging

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037747-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037747-9999.pdf)

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

## Vehicles listed

- 2026 GMC HUMMER EV PICKUP
- 2026 GMC HUMMER EV SUV

JSON: [/v1/bulletins/11037747](/v1/bulletins/11037747)

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