Flash: Transmission Shift Enhancements
This bulletin involves selectively erasing and reprogramming the Transmission Control
Module (TCM) with new software.
The customer may experience one or more of the following:
Grand Cherokee/Durango 3.6L Engine (Sales Code ERB)
? Erratic shifting complaints while driving up steep hills or towing during hot ambient
temperature conditions.
? Transmission shifting does not meet customers expectation while towing a loaded
trailer in high ambients (>32°C/90°F).
? Poor performance and/or poor powertrain response when trying to accelerate from
speeds >58 kph (36 mph) - All Markets.
? Poor performance and/or poor powertrain response when trying to accelerate from
speeds >48 kph (30 mph) - Japan/Taiwan/China vehicles only.
? Transmission shifts inconsistently (gear hunting) when driving up/down steep hills or
when towing a trailer.
Grand Cherokee 6.4L Engine (Sales Code ESG)
? Poor acceleration or performance above 113 kph (70 mph).
? Transmission shifting while accelerating from a stop does not meet customers
expectation.
? Harsh shifting during acceleration with moderate accelerator pedal and then lifting
off the accelerator pedal.
? Cannot accelerate up a steep incline or with a loaded trailer in reverse.
Wrangler 3.6L Engine (Sales Code ERB)
? Erratic shifting complaints while driving up steep hills or towing during hot ambient
temperature conditions.
? Hanging in gear (2nd Gear) when driving up steep hill or Towing (Rubicon
ONLY).
? Transmission shifting does not meet customers expectation while towing a loaded
trailer in high ambients (>32°C/90°F).
? Poor performance and/or poor powertrain response when trying to accelerate from
speeds >48 kph (30 mph) - Japan/Taiwan/China vehicles only.
? Delayed Drive to Reverse shift engagement when the transfer case is in Low Range
(4LO) - Rubicon Only.
Wrangler 2.8L Engine (Sales Code ENS)
Erratic while driving in Low Range (4LO).
Transmission shifts in
