# Service bulletin 2102122

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: 10230336
- Published by NHTSA: 2023\-01\-17
- Manufacturer's number: 2102122
- Manufacturer's date: 2022\-07\-12
- NHTSA component: ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may comment on one or more of the following: When decelerating from a 1 to 2 gear shift, the vehicle may have a harshshift. From a 1 to 2 gear change there may be a perceived bump feeling, whilehaving a light pedal\(Sales Codes ETL and ETN Only\). A harsh shift from a 2 to 3 gear shift while at almost or wide openthrottle. A harsh shift from a 3 to 4 shift and heavy on the pedal, lifting offthe pedal, then back on the pedal again. While coasting down a grade, an abrupt deceleration may be felt. A clunk heard when shifting from park to reverse or drive. Cold engine flare during a shift. A delay when coasting down, vehicle is in a downshift at low speedsand then trying to accelerate. \(The vehicle will have a hesitation as the vehicle tries to change gears to accommodate the new pedaldemand\). Excessive shifting\(DD and DP Only\). Engine flare caused by the transmission releasing the clutch too early duringa 1 to 2 shift. Poor shift quality. Shift or gear hunting.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10230336-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10230336-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Vehicles listed

- 2020 RAM 3500
- 2020 RAM 4500
- 2020 RAM 5500

## Recalls for the same vehicles and component

- [2022644](/recalls/tc/2022644.md), 2022-11-10: Powertrain
- [22V835000](/recalls/nhtsa/22V835000.md), 2022-11-10: POWER TRAIN:AUTOMATIC TRANSMISSION
- [20V511000](/recalls/nhtsa/20V511000.md), 2020-08-27: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; ELECTRICAL SYSTEM:SOFTWARE
- [2020025](/recalls/tc/2020025.md), 2020-01-24: Powertrain
- [20V043000](/recalls/nhtsa/20V043000.md), 2020-01-24: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [9100901](/bulletins/11037344.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [113744](/bulletins/11035981.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113742](/bulletins/11035980.md), 2026-08-06, Service bulletin: ENGINE; ELECTRICAL SYSTEM. SENSOR \- TURBOCHARGER SPEED
- [113069](/bulletins/11034910.md), 2026-07-08, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. SWITCH – HEADLAMP
- [113070](/bulletins/11034909.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH – HEADLAMP
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [9100835](/bulletins/11033957.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [S2623000040](/bulletins/11033896.md), 2026-06-16, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [08\-208\-26 REV. A](/bulletins/11032842.md), 2026-05-20, Service bulletin: ELECTRICAL SYSTEM. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub \(no charging, no data\). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle.

JSON: [/v1/bulletins/10230336](/v1/bulletins/10230336)

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