Chevrolet Aveo 2004–2007 — technical service bulletin
Bulletin 3988 · NHTSA communication 10021083 · issued Mar 1, 2007
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2007
model years
4
vehicle entries
Official summary
Heli-coil threads pull out of oil pan drain plug opening - replace oil pan. *kb
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.