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October 23, 2019 Service bulletin

Flash: Powertrain Control Module (PCM) Updates

Jeep technical service bulletin 18-074-19 for 2020 Jeep Grand Cherokee.

Bulletin number
18-074-19
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on the following condition: Perceive rough and/or erratic transmission shifting between gears during normal drive cycles.

Owners of these vehicles have filed 39 complaints in the transmission category.

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