# Service bulletin 21\-040\-16

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: 10121888
- Published by NHTSA: 2017\-11\-03
- Manufacturer's number: 21\-040\-16
- Manufacturer's date: 2016\-11\-29
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. Some customers may experience a less than desirable upshift in the transmission.The following enhancements are included in the software update: Transmission up shift quality enhancement in conjunction with Powertrain Control Module \(PCM\) reprogram.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10121888-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10121888-0001.pdf)

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

## Components

Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- 2016 JEEP CHEROKEE

## Recalls for the same vehicles and component

- [23V302000](/recalls/nhtsa/23V302000.md), 2023-04-27: POWER TRAIN:AUTOMATIC TRANSMISSION
- [20V343000](/recalls/nhtsa/20V343000.md), 2020-06-11: POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT; POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [S2325000007](/bulletins/10248564.md), 2024-01-08, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). MIL/check engine lamp comes on after performing U90 recall PCM software update.
- [S2325000007](/bulletins/10244403.md), 2023-10-30, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). MIL/check engine lamp comes on after performing U90 recall PCM software update.
- [9003783](/bulletins/10224897.md), 2022-10-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; STRUCTURE. Shifter \- Automatic Transmission If a 2015 \- 18MY KL ONLY is brought in with a ?Service Shifter? message on the cluster and/or the following DTCs are present indicating loss of communication with the shifter: U0103, U0103\-87. Prior to beginning any repair, please call John Zbranchik at 248\-576\-0756 or Pablo Flores at 248\-576\-3972. If no reply contact Dil Weerasinha at 248\-944\-5967 or Jay Nagle 248\-576\-5657. If you are unable to contact any of the above, and all the DTCs related to loss of comm are STORED, first perform a vehicle scan with a wiTECH tool or similar and email the log to john.zbranchik@fcagroup.com and pablo.flores1@fcagroup.com. Ensure all stored DTCs in the vehicle are recorded in the log. Use the tool to clear all codes and ensure the ?Service Shifter? message does not return. If this is the first occurrence of this issue on this vehicle, do NOT replace the shifter at this time. If any DTCs related to loss of comm with the shifter are ACTIVE, a full bus log is highly desired. Please contact a regional tech representative to acquire this log. After the log is acquired, or if this is not feasible, check for loose/bent pins, spread terminals on both the male pin cavity in the shifter and the female connector from the body harness take out and all grounds. If no issues are found, replace the shifter and return it to the Quality Engineering Center \(QEC\).
- [2103117](/bulletins/10223673.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN; ELECTRICAL SYSTEM. This bulletin involves reprogramming the Transmission Control Module \(TCM\) with the latest available software. The following software enhancement is also included:Improve shift quality.
- [74595](/bulletins/10223471.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. Warranty Bulletin D\-21\-07 \(X89\) Power Transfer Unit \- 2014\-2017 Jeep Cherokee \(KL\)
- [W84](/bulletins/10220584.md), 2022-09-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Customer Satisfaction Notification W84 Powertrain Software Update
- [2100116](/bulletins/10218155.md), 2022-08-22, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Transmission Diagnostic And Shift Enhancements.
- [1801416](/bulletins/10215126.md), 2022-07-05, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Powertrain Diagnostic and System Improvements.
- [1801416 REV A](/bulletins/10215125.md), 2022-07-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Powertrain Diagnostic and System Improvements.
- [1800216](/bulletins/10215112.md), 2022-07-05, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). This bulletin involves reprogramming the Powertrain Control Module \(PCM\) with the latest

JSON: [/v1/bulletins/10121888](/v1/bulletins/10121888)

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