Check a VIN

November 18, 2025 Over-the-air update

This software update includes the following, if your vehicle is equipped: • Improvements to battery health...

Chevrolet technical service bulletin 653.20 for 2024-2026 Chevrolet Blazer EV.

Bulletin number
653.20 (653.20)
Component
Unknown or other
Summary
This software update includes the following, if your vehicle is equipped: • Improvements to battery health diagnostics. • Fixes for efficiency when using fast charging stations. • Improvements to reliability for climate control and charging. • Improvements to the accuracy of efficiency values. • Improvements to shifting. • Fixes to protect battery health and adjust charge limits. 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.

Vehicles covered

VIN decoder

See the problems and recalls for an exact car

Buying a used Chevrolet Blazer EV?

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.

Check its history