# Service bulletin 21\-050\-24

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: 11008217
- Published by NHTSA: 2024\-10\-01
- Manufacturer's number: 21\-050\-24
- Manufacturer's date: 2024\-09\-26
- NHTSA component: POWER TRAIN
- Manufacturer's system: Transmission Control Module

## NHTSA's summary

"Flash: Transmission Control Module \(TCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P1DCD\-00 \- TCM Monitoring Processor Performance Multiple Clutches Locked Up. Customers may also comment on the following: ● Transmission randomly shifts into neutral gear while driving. NOTE: The vehicle can be reset with an ignition/key cycle from Off and then back to Start to allow the vehicle to shift normally. This bulletin involves reprogramming the TCM with the latest available software."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11008217-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11008217-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P1DCD

## Vehicles listed

- 2022 RAM PROMASTER

JSON: [/v1/bulletins/11008217](/v1/bulletins/11008217)

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