# Over\-the\-air update 662.20

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: 11036496
- Published by NHTSA: 2026\-08\-31
- Manufacturer's number: 662.20
- Manufacturer's date: 2026\-08\-03
- Campaign id or software version: Assisted Driving \& Cabin 2026.2
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: BCM, EBCM, FCM, LRR, SBZA, SRR, TPIM: BCM \(Body Control Module\), EBCM \(Electronic Brake Control Module\), FCM \(Front Camera Module\), LRR \(Long Range Radar\), SBZA \(Side Blind Zone Alert\), SRR \(Short Range Radar\), TPIM \(Traction Power Inverter Module\)

## NHTSA's summary

• Improvements to active cabin ventilation • Additional protection for the health of your battery • Improvements to the software update system • Improves traction and stability control when accelerating or on uneven terrain • Improves braking and stopping performance on low\-traction surfaces • Fixes to help ensure driver assistance features remain functional when the windshield freezes. • Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features. • Fixes to help ensure accurate driver display messages and alerts. • Improvements to the performance of One\-Pedal Driving • Improvements to propulsion and acceleration.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036496-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036496-9999.pdf)

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

## Vehicles listed

- 2025 CHEVROLET BLAZER EV

JSON: [/v1/bulletins/11036496](/v1/bulletins/11036496)

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