Chevrolet Volt 2016–2019 — technical service bulletin
Bulletin 21-NA-116 · NHTSA communication 10231892 · issued Feb 3, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2019
model years
4
vehicle entries
Official summary
This service bulletin provides a service procedure to replace the EGR to correct a customer concern of a MIL illuminated.
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.