Jeep Wrangler 2003–2004 — technical service bulletin
Bulletin 2101005 · NHTSA communication 10015064 · issued Apr 23, 2005
Technical service bulletin
communication type
Power Train
component
2003–2004
model years
2
vehicle entries
Official summary
Spark knock or powertrain rattle-like sound from transfer case shifter area. *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.