Chevrolet Silverado EV 2024–2025 — technical service bulletin
Bulletin N25-249834 · NHTSA communication 11016075 · issued Mar 29, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
2
vehicle entries
Official summary
Update Title: Important Update N25-2498340 Release Notes: Your vehicle keeps getting better. This software update includes the following, if your vehicle is equipped: • Improves accuracy of service messages for high voltage charging system. • Reduces drain on 12V battery. • Improves performance of charging. • Improves performance of wireless communication of the Lithium Ion battery status. • Improves performance of cabin heating and windshield defrosting system. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an updat
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.