# Service bulletin 21\-037\-20

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: 10177519
- Published by NHTSA: 2020\-07\-27
- Manufacturer's number: 21\-037\-20
- Manufacturer's date: 2020\-06\-02
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:SEALS/GASKETS; POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN:TRANSMISSION CASE/HOUSING

## NHTSA's summary

Transmission Case Oil Leak This bulletin involves tightening the lower transmission bolts to updated torque specifications to possibly eliminate a leak at the case split line of the transmission. Customers may notice \(possibly transmission\) fluid leaking on the ground from the left front of the vehicle.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10177519-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10177519-9999.pdf)

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

## Components

Transmission and driveline, Automatic transmission, Transfer case

## Vehicles listed

- 2019 RAM PROMASTER CITY

## Other bulletins for the same vehicles and component

- [18\-068\-19](/bulletins/10168447.md), 2019-12-02, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0300 \- Multiple Cylinder Misfire. P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire.

JSON: [/v1/bulletins/10177519](/v1/bulletins/10177519)

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