Chevrolet Volt 2011 — technical service bulletin
Bulletin N172130461 · NHTSA communication 10171245 · issued Dec 5, 2019
Technical service bulletin
communication type
Electrical System
component
2011
model years
1
vehicle entries
Official summary
N172130461 (18216) - Customer Satisfaction Program - Certain 2011 model year Chevrolet Volt vehicles equipped with a high voltage battery, may have a condition where it could gradually lose the ability to maintain voltage. If battery concerns are not addressed, over time 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.