Jeep Wrangler 1997–2005 — technical service bulletin
Bulletin 0901004 · NHTSA communication 10006452 · issued Oct 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–2005
model years
9
vehicle entries
Official summary
Dirt and debris accumulation at rear main seal. *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.