Chevrolet Aveo 2004 — technical service bulletin
Bulletin 040137003 · NHTSA communication 10008645 · issued Mar 1, 2004
Technical service bulletin
communication type
Equipment
component
2004
model years
1
vehicle entries
Official summary
Poor heating performance/insufficient heat during low ambient temperatures. 2004 chevrolet epica, optra also included. *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.