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May 17, 2013 Service bulletin

Flash: MIL

Jeep technical service bulletin 21-005-13 for 2012 Jeep Grand Cherokee, 2012 Jeep Wrangler and 2012 Dodge Durango and others.

Bulletin number
21-005-13
Component
Power train
Summary
FLASH: MIL Illumination For P0730 - Incorrect Gear Ratio This bulletin involves updating the Transmission Control Module (TCM) software. Customers may indicate that the MIL is illuminated and/or the transmission went into limp-in. Upon further investigation, Diagnostic Trouble Code (DTC) P0730 - Incorrect Gear Ratio is either active or stored in the PCM?s memory.

Owners of these vehicles have filed 504 complaints in the transmission category.

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