# Service bulletin 21\-044\-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: 11005078
- Published by NHTSA: 2024\-07\-23
- Manufacturer's number: 21\-044\-24
- Manufacturer's date: 2024\-07\-17
- 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

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11005078-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11005078-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P1DCD

## Vehicles listed

- 2023 RAM PROMASTER

JSON: [/v1/bulletins/11005078](/v1/bulletins/11005078)

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