Chevrolet Bolt EV 2017–2020 — technical service bulletin
Bulletin 19NA220 · NHTSA communication 10173399 · issued Feb 17, 2020
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2017–2020
model years
4
vehicle entries
Official summary
This technical bulletin provides a procedure to inspect and possibly replace the engine wiring harness if found damaged near the X2 connector to correct a Loss of Propulsion, MIL Illuminated w/DTCs.
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.