Chevrolet Silverado 1500 2019–2020 — technical service bulletin
Bulletin PIT5723A · NHTSA communication 10224286 · issued Sep 14, 2022
Technical service bulletin
communication type
Fuel System, Gasoline
component
2019–2020
model years
4
vehicle entries
Official summary
This Preliminary information communicates information that the EVAP purge pump may be filling with liquid fuel if the customer overfills the fuel tank by over 3 clicks of a normal filler nozzle. Reference N202324990: Special Coverage - Evaporative Emissions Purge Pump for repair information
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.