Buick Century 2000 — technical service bulletin
Bulletin 020101 · NHTSA communication 618156 · issued Jan 2, 2001
Technical service bulletin
communication type
Fuel System, Gasoline
component
2000
model years
4
vehicle entries
Official summary
Information on vehicles exhibiting an opr valve causing diagnostic trouble code p0442, or causing a leak, air will be heard exiting the rubber dump hose located on the left side of the fuel tank. *tt
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.