Chevrolet Volt 2011–2012 — technical service bulletin
Bulletin 19NA049 · NHTSA communication 10161888 · issued May 1, 2019
Technical service bulletin
communication type
Electrical System
component
2011–2012
model years
2
vehicle entries
Official summary
This technical bulletin provides repair information to correct a customer concern of reduced propulsion power without DTCs on higher mileage vehicles (with P1.4 Cell Chemistry).
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.