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March 31, 2017 Service bulletin

Flash: Transmission Diagnostic And Shift Enhancements

Jeep technical service bulletin 21-009-17 REV. A for 2017 Jeep Grand Cherokee and 2017 Dodge Durango.

Bulletin number
21-009-17 REV. A
Component
Electrical system
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 the following condition: During an engine limp mode condition, the transmission remains in a fixed gear.The following software enhancement is also available: Transmission shift quality enhancement.

Owners of these vehicles have filed 149 complaints in the electrical category.

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