Chevrolet Silverado 2017–2020 — technical service bulletin
Bulletin 18NA361 · NHTSA communication 10165093 · issued Aug 14, 2019
Technical service bulletin
communication type
Fuel System, Gasoline
component
2017–2020
model years
11
vehicle entries
Official summary
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
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.