Chevrolet Impala 2004 — technical service bulletin
Bulletin 040138009 · NHTSA communication 10012105 · issued Jul 1, 2004
Technical service bulletin
communication type
Equipment
component
2004
model years
3
vehicle entries
Official summary
Poor a/c performance - a/c will not blow cold enough, recirculation mode door inoperative, diagnostic trouble codes (dtcs) b0268 and b0269 set. *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.