# Service bulletin 18\-055\-17

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: 10138902
- Published by NHTSA: 2018\-06\-04
- Manufacturer's number: 18\-055\-17
- Manufacturer's date: 2017\-06\-08
- NHTSA component: POWER TRAIN

## NHTSA's summary

Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest available software. Some customers may experience when staring a cold engine the vehicle has a rough idle and/or the engine will immediately shut off.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10138902-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10138902-0001.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2017 RAM 1500
- 2017 RAM 2500
- 2017 RAM 3500

## Recalls for the same vehicles and component

- [2018081](/recalls/tc/2018081.md), 2018-02-08: Powertrain
- [18V100000](/recalls/nhtsa/18V100000.md), 2018-02-08: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2017659](/recalls/tc/2017659.md), 2017-12-21: Powertrain
- [17V821000](/recalls/nhtsa/17V821000.md), 2017-12-20: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
- [2017167](/recalls/tc/2017167.md), 2017-03-23: Powertrain
- [17V198000](/recalls/nhtsa/17V198000.md), 2017-03-23: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

## 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.
- [102307](/bulletins/11012351.md), 2025-01-06, Service bulletin: POWER TRAIN. GEAR \- REACTION SUN
- [102387](/bulletins/11012318.md), 2025-01-04, Service bulletin: POWER TRAIN. SEAL \- OUTPUT SHAFT
- [102389](/bulletins/11012314.md), 2025-01-04, Service bulletin: POWER TRAIN. SEAL \- OUTPUT SHAFT
- [101232](/bulletins/11010205.md), 2024-11-07, Service bulletin: POWER TRAIN. Plate \- Planetary
- [S1623000028 Rev.](/bulletins/10231735.md), 2023-02-13, Service bulletin: VEHICLE SPEED CONTROL; BACK OVER PREVENTION; POWER TRAIN; VISIBILITY; PARKING BRAKE. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9003704](/bulletins/10229255.md), 2023-01-09, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. Transmission Oil Pan, Heater \(TMU\), Tube or O\-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips \(snap ring\) for the quick disconnect fittings are missing. \(This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.\) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
- [9003704](/bulletins/10224898.md), 2022-10-31, Service bulletin: POWER TRAIN; ENGINE AND ENGINE COOLING. Trans Oil Pan, Heater Tube or O\-ring, Heater Applies to vehicles equipped with 8 speed transmissions only; If you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. If you have a leak concern please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. See your parts specialist for the proper gasket for the repair.
- [9003805](/bulletins/10224896.md), 2022-10-31, Service bulletin: WHEELS; EQUIPMENT; POWER TRAIN. Hub \& Bearing Assy \- Front For issues with front wheel Hub/Bearings appearing to leak grease, do not replace the parts. Please call Paul Kuehl for further assistance, at cell \(248\) 535\-7013. If no response in 15minutes, proceed with repair, but do not replace bearing\(s\) unless there is visible damage, see Service Manual Diagnostic Procedure which includes a picture of typical bearing grease weepage.
- [9003802](/bulletins/10224893.md), 2022-10-31, Service bulletin: POWER TRAIN. SCR Converter \- Ammonia Trap If a customer comes in with a check engine light for P20EE and has led to replacing the SCR, please contact Dean Armstrong at \(248\)\-944\-5364. Cummins and FCA engineering is currently investigating the root cause to this condition. If you do not receive an answer or call back within 15 minutes, proceed with normal diagnostics

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