Cadillac CTS 2003–2005 — technical service bulletin
Bulletin 3215 · NHTSA communication 10010864 · issued Dec 15, 2004
Technical service bulletin
communication type
Fuel System, Other
component
2003–2005
model years
6
vehicle entries
Official summary
Check engine light on diagnostic trouble code p0446, p0451, or p0453 may have a hard to fill fuel tank. *tt
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.