Jeep Grand Cherokee 2005–2006 — technical service bulletin
Bulletin 2100906 · NHTSA communication 10019940 · issued Apr 12, 2006
Technical service bulletin
communication type
Power Train
component
2005–2006
model years
4
vehicle entries
Official summary
Malfunction indicator lamp (mil) illumination; a rattle-like sound from the torque converter; and intermittent torque converter lock and unlock when in lock-up mode. *tt
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.