Chevrolet Volt 2011–2012 — technical service bulletin
Bulletin 21NA019 · NHTSA communication 10188400 · issued Jan 25, 2021
Technical service bulletin
communication type
Electrical System
component
2011–2012
model years
2
vehicle entries
Official summary
This service bulletin provides Diagnostic Aid information - Surge in EV Mode at a Stop.
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.