# Over\-the\-air update 653.20

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: 11024651
- Published by NHTSA: 2025\-10\-31
- Manufacturer's number: 653.20
- Manufacturer's date: 2025\-10\-13
- Campaign id or software version: 653.20
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: ACP, BCM, CGM, EBCM, PCM, TCP: ACP \(ADAS Compute Platform\), BCM \(Body Control Module\), CGM \(Communication Gateway Module\), EBCM \(Electronic Brake Control Module\), PCM \(Powertrain Control Module\), TCP \(Telematics Communication Platform\)

## NHTSA's summary

• Improves how center display adjusts to lighting changes. • Improved warnings when a key is missing. • Better tuning for interior lighting in Stealth mode. • Improvements to automatic low beam headlamp logic. • Smoother dimming and transitions from day to night. • Improves Check Engine Light accuracy. • Improves behavior of aero shutter system in freezing temperatures. • Fixes to help prevent erroneous collision calls. • Fixes to address issues with OnStar stolen vehicle responses. • Improvements to performance of software updates and connectivity. • Fixes to help prevent battery drain. • Fixes to responsiveness issues with Wi\-Fi, Navigation, Super Cruise, and OnStar. • Improvements to software updates. • Improvements to OnStar emergency calls. • Fixes to address cellular connectivity issues. • Fixes calculation of vehicle brake pad life to address inaccurate status shown on center display. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation. If you are not using your vehicle's built\-in 4G LTE connection, then applicable data rates apply.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024651-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024651-9999.pdf)

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

## Vehicles listed

- 2025 BUICK ENCLAVE
- 2025 CHEVROLET TRAVERSE
- 2025 GMC ACADIA

JSON: [/v1/bulletins/11024651](/v1/bulletins/11024651)

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