Hyundai Elantra 2001–2003 — technical service bulletin
Bulletin 0436004 · NHTSA communication 10006736 · issued Apr 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2003
model years
3
vehicle entries
Official summary
Ecm (engine control module) reprogramming for warm ambient cold start stumble (wacss) and engine hesitation at approximately 3800 rpm. *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.