Chevrolet Aveo 2004 — technical service bulletin
Bulletin 040137003A · NHTSA communication 10012170 · issued Sep 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004
model years
1
vehicle entries
Official summary
Poor heating performance/insufficient heat during low ambient temperatures. This service bulletin replaces 040137003. *eh
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.