Flash: Cruise Control Inoperative and/or Knocking (Detonation) Sound This bulletin involves selectively...
Jeep technical service bulletin 18-019-14 for 2014 Jeep Grand Cherokee.
- Bulletin number
- 18-019-14
- Component
- Power train: automatic transmission: control module (TCM/PCM/tecm)
- Summary
- Flash: Cruise Control Inoperative and/or Knocking (Detonation) Sound This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience Cruise Control lock out (inoperative) after several ?+? cruise button inputs attempting to increase Cruise Set Speed. Turning the ignition off and back on will clear the condition.Some vehicles equipped with Euro 4 Emissions (sales code NB4) may experience a knocking noise due to detonation.
Owners of these vehicles have filed 476 complaints in the transmission category.
Vehicles covered
- Jeep Grand Cherokee 2014 2014
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