WenmarOpen by Wenmar Pro

Service bulletins for the 2016 Jeep Grand Cherokee

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.

408 on file from NHTSA, as of 2026-10-19.

About U0404 on the 2016 Jeep Grand Cherokee: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: U0404 are shown. Show all

Bulletins, newest first
21-011-162022-09-26. Service bulletin. POWER TRAIN; AIR BAGS; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · U0404 - Invalid Data Received From Gear Shift Control Module "A". In addition, customers may experience the following conditions: · Bumps on 2 - 1 down-shift while braking. · The M on the shifter and Instrument cluster may be blinking. The following improvements are included in this update: · **Improved 2 - 1, 3 - 2 and 6 - 5 down-shifts (6.4L only).** · Improved 1 - 2 light throttle up-shifts.
21-011-162018-06-11. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Enhancements This bulletin involves reprogramming of the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: U0404 - Invalid Data Received From Gear Shift Control Module "A". In addition, some customers may experience the following condition: The M on the shifter and Instrument cluster may be blinking.
21-011-16 REV. B2018-05-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · U0404 - Invalid Data Received From Gear Shift Control Module "A". In addition, customers may experience the following conditions: · Bumps on 2 - 1 down-shift while braking. · The M on the shifter and Instrument cluster may be blinking. The following improvements are included in this update: · **Improved 2 - 1, 3 - 2 and 6 - 5 down-shifts (6.4L only).** · Improved 1 - 2 light throttle up-shifts.
21-011-16 REV. A2017-11-03. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · U0404 - Invalid Data Received From Gear Shift Control Module "A". In addition, some customers may experience the following conditions: · **Bumps on 2 -1 down-shift while braking.** · The M on the shifter and Instrument cluster may be blinking. The following improvements are included in this update: · **Improved 1 - 2 light throttle up-shifts.**

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.