Chevrolet Volt 2016–2019 — technical service bulletin
Bulletin PIT5708 · NHTSA communication 10165883 · issued Sep 10, 2019
Technical service bulletin
communication type
Electrical System
component
2016–2019
model years
4
vehicle entries
Official summary
This Preliminary Information communication advises the technician on a area to look at for a loss of low speed lan communication if the concern can't be found through normal diagnosis. The technician is to inspect connector X450 for water intrusion and repair as needed.
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.