Chevrolet Volt 2016–2018 — technical service bulletin
Bulletin N202307990 · NHTSA communication 10189167 · issued Feb 4, 2021
Technical service bulletin
communication type
Lane Departure
component
2016–2018
model years
3
vehicle entries
Official summary
Customer Satisfaction program - certain vehicles may have a condition related to the high voltage battery which could gradually lose the ability to maintain voltage. If battery concerns are not addressed, the vehicle could enter a reduced propulsion mode while driving, or lose propulsion, or it may not start. Dealers are to update the Hybrid Powertrain Control Module 2 (HPCM2). This software update is intended to increase the amount of warning time provided.
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.