# Service bulletin 21\-033\-14

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10139799
- Published by NHTSA: 2018\-06\-11
- Manufacturer's number: 21\-033\-14
- Manufacturer's date: 2014\-10\-22
- NHTSA component: POWER TRAIN; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE

## NHTSA's summary

FLASH: MIL Illumination For P0730 And Transmission Shift Enhancements This bulletin involves selectively erasing and reprogramming the Transmission Control Module \(TCM\) with new software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, the technician may find that Diagnostic Trouble Code \(DTC\) P0730 Incorrect Gear Ratio is setting erroneously. In addition to correcting the DTC, the following Transmission Control Module \(TCM\) calibration improvements are now available. These updates are broken down by vehicle line and engine category.WK, WD, JK and LC Vehicles equipped with a 3.6L engine \(Sales Code ERB\) Hanging in gear during HOT ambient temperature conditions while vehicle is loaded or towing. Delayed downshift during acceleration at speeds above 48 kph. \(Taiwan, Japan, and China market only\). Delayed downshift when driving at altitudes higher than 2500 feet. Inconsistent shifting when towing or while driving up or down steep hills. Delayed upshift while driving in 4 low Intermittent delayed shift. Delayed engagement when shifting from drive to reverse while in 4 low. \(JK Rubicon only\) Delayed shift from second gear while towing or driving on steep grades. \(JK Rubicon only\) Intermittent delayed engagement from reverse to drive. Less than desired shift quality in AutoStick mode. \(LC vehicles only\) Fuel economy improvements. \(LC vehicles only\)LC Vehicles equipped with a 5.7L engine \(Sales Codes EZH or EZC\) Hanging in gear during HOT ambient temperature conditions while vehicle is loaded or towing. Bump sensation felt during deceleration or braking. Fuel economy improvements.LC and WK Vehicles equipped with a 6.4L engine \(Sales Codes ESH or ESG\) Bump sensation felt during deceleration or braking. \(LC only\) Inconsistent downshift during Wide Open Throttle \(WOT\) accelerations at highway speeds \(i.e. passing\). Transmission enhancements to improve acceleration while in reverse going uphill on steep

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10139799-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10139799-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Fuel system, Lighting, Transmission and driveline

## Trouble codes named

P0730

## Vehicles listed

- 2012 CHRYSLER 300C
- 2012 DODGE CHALLENGER
- 2012 DODGE CHARGER
- 2012 DODGE DURANGO
- 2012 JEEP GRAND CHEROKEE
- 2012 JEEP LIBERTY
- 2012 JEEP WRANGLER

## Recalls for the same vehicles and component

- [2019573](/recalls/tc/2019573.md), 2019-11-14: Fuel System
- [19V813000](/recalls/nhtsa/19V813000.md), 2019-11-14: ELECTRICAL SYSTEM
- [2017341](/recalls/tc/2017341.md), 2017-07-10: Electrical
- [17V435000](/recalls/nhtsa/17V435000.md), 2017-07-10: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
- [16V739000](/recalls/nhtsa/16V739000.md), 2016-10-13: ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
- [2016500](/recalls/tc/2016500.md), 2016-10-12: Electrical
- [2016184](/recalls/tc/2016184.md), 2016-04-26: Powertrain
- [16V240000](/recalls/nhtsa/16V240000.md), 2016-04-25: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [15V879000](/recalls/nhtsa/15V879000.md), 2015-12-28: INTERIOR LIGHTING; ELECTRICAL SYSTEM:WIRING
- [2015615](/recalls/tc/2015615.md), 2015-12-22: Electrical

## Other bulletins for the same vehicles and component

- [S2621000003 REV.A](/bulletins/11030138.md), 2026-03-18, Service bulletin: POWER TRAIN. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV, 8HP75\-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [110603](/bulletins/11030026.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. SPEAKER \- NONE
- [110604](/bulletins/11030025.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. SPEAKER \- NONE
- [105038](/bulletins/11018500.md), 2025-05-20, Service bulletin: FUEL/PROPULSION SYSTEM. TUBE \- FUEL INJECTOR SUPPLY \& GASKET \- NONE
- [105039](/bulletins/11018408.md), 2025-05-16, Service bulletin: FUEL/PROPULSION SYSTEM. TUBE \- FUEL INJECTOR SUPPLY \& GASKET \- NONE
- [102812](/bulletins/11015125.md), 2025-03-05, Service bulletin: FUEL/PROPULSION SYSTEM. RAIL \- FUEL
- [9100494](/bulletins/11013256.md), 2025-01-30, Service bulletin: FUEL/PROPULSION SYSTEM. FUEL PUMP/LEVEL UNIT MODULE For vehicles with Saddle Fuel Tanks, need to determine if there are any DTCs in wiTECH. Follow Service Diagnostics published prior to making any changes. Review any existing SOL or TSBs published for customer complaint issue. Only the Fuel Pump Module should be replaced if there are DTCs associated with the Fuel Level Sensor number 1. Only the Auxiliary Level Sender should be replaced if there are DTCs associated with the Fuel Level Sensor number 2. If there is a mixture of DTCs between the Fuel Pump Module and the Auxiliary Level Sensor, then investigate if there is a Jumper Harness or circuit issue between the Level Sender and the PCM. Verify fuel transfer between auxiliary tank and the primary tank by monitoring the auxiliary level sensor to verify it drops after driving.
- [101232](/bulletins/11010205.md), 2024-11-07, Service bulletin: POWER TRAIN. Plate \- Planetary
- [9100226](/bulletins/10248509.md), 2024-01-08, Service bulletin: ELECTRICAL SYSTEM. Connector kit Before ordering this connector repair kit 68018957A$, check it in the Mopar Connector Repair Kit Website to confirm part number and applicability. There is an error with the wiring diagrams in Service Library that is causing the incorrect repair kit part number to populate. Please use the Mopar Connector Repair Kit Website until this issue is resolved.
- [9100226](/bulletins/10244348.md), 2023-10-30, Service bulletin: ELECTRICAL SYSTEM:WIRING. Connector kit Before ordering this connector repair kit 68018957A$, check it in the Mopar Connector Repair Kit Website to confirm part number and applicability. There is an error with the wiring diagrams in Service Library that is causing the incorrect repair kit part number to populate. Please use the Mopar Connector Repair Kit Website until this issue is resolved.

JSON: [/v1/bulletins/10139799](/v1/bulletins/10139799)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2021-033-14&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10139799&vehicle=Service%20bulletin%2021-033-14)