Jeep Wrangler 2014–2015 — technical service bulletin
Bulletin 21-026-15 · NHTSA communication 10057945 · issued Apr 21, 2015
Technical service bulletin
communication type
Power Train
component
2014–2015
model years
2
vehicle entries
Official summary
Chrysler 2014-2015 jeep wrangler: information regarding transmission control module available software. Customers are experiencing delayed shift response when driving up hills, vibration on acceleration from a cruising speed. *lj
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.