June 9, 2017 Service bulletin

Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming the...

Jeep technical service bulletin 21-002-17 REV. A for 2017 Jeep Grand Cherokee.

Bulletin number: 21-002-17 REV. A
Component: Electrical system: software
Summary: Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory:P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up. In addition, customers may also experience the following condition:During an engine limp mode condition, the transmission remains in a fixed gear. This update allows transmission gear shifting while in limp-in mode, rather than a fixed gear. Bumps on 2-1 and 6-5 down-shift while braking. This software update also includes an enhancement:Improved 5-4 down-shift.

Owners of these vehicles have filed 87 complaints in the electrical category.

Vehicles covered

See the problems and recalls for an exact car

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.