Flash: Shift Quality Improvements This bulletin involves flash reprogramming of the Transmission Control...
Jeep technical service bulletin 21-004-14 for 2014 Jeep Grand Cherokee.
- Bulletin number
- 21-004-14
- Component
- Electrical system
- Summary
- Flash: Shift Quality Improvements This bulletin involves flash reprogramming of the Transmission Control Module (TCM) with new software. Customers may indicate that the shift quality may not meet their expectations under the following conditions:Upshift Improvements Upshift quality in normal mode under light/medium accelerationDownshift Improvements Power-on downshift qualityGeneral Improvements Altitude drivability High speed drivability Grade drivability ECO mode drivability Torque converter clutch control on engagement and tip-in/out General engagement quality in 4X4 high and 4X4 low range
Owners of these vehicles have filed 485 complaints in the electrical category.
Vehicles covered
- Jeep Grand Cherokee 2014 2014
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