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Service bulletins for the 2016 Ram 4500

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.

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

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
90039882019-07-15. Service bulletin. POWER TRAIN. Brake Transmission Shift Interlock (BTSI) Please contact Stacey Davis at (248) 260-6078 or stacey.davis@fcagroup.com if the following scenario occurs; The T79 or U11 recall was completed where the shifter inspection was acceptable and the software flash was performed but then the customer comes back needing the BTSI bracket replaced for coming out of park without the brake or key.
18-080-15 REV A2019-05-20. Service bulletin. POWER TRAIN. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. NOTE: This bulletin fixes all vehicles listed and also contains an optional software path for situations where the customer is specifically complaining of a Drone Noise, Shudder, Pulsation, or Vibration under light throttle applications while vehicle is operating in MDS/ECO mode (optional software available for D2 & DJ vehicles). There will be two separate software options displayed on the wiTECH flash tab. The software file released for this condition contains the verbiage OPTIONAL. The other file is the standard software that does not contain improvements for the Drone/Shudder concern. If for some reason the customer finds this shudder improvement objectionable, the PCM software may be returned/reflashed to the standard version. Both software versions will address the remaining conditions noted in the bulletin. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC): ? P0456 - Evap System Small Leak. ? P3402 - Cylinder 1 Deactivation Control Performance. ? P3426 - Cylinder 4 Deactivation Control Performance. ? P3442 - Cylinder 6 Deactivation Control Performance. ? P3450 - Cylinder 7 Deactivation Control Performance. ? P2610 - PCM Internal Engine Off Timer Performance set in the PCM memory. In addition to the DTC listed above, the software update will improve: Improved Cruise Control Acceleration mode. ? Improved Multi Displacement System operation. 6-Speed Automatic 66RFE transmission (Sales Code DFP). ? Multi Displacement System function improved while in PTO stationary mode. 6-Speed Auto Aisin AS66RC transmission (Sales Code DF3). ? Potential small improvement in fuel economy at higher altitudes. ? Potential improvement in high altitude eng
18-080-152019-05-20. Service bulletin. POWER TRAIN; ENGINE. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC): P2610 - PCM Internal Engine Off Timer Performance set in the PCM memory. In addition to the DTC listed above, the software update will improve the EGR monitor status function.
68317270A2018-11-26. Service bulletin. POWER TRAIN. 2014 KL 9-Speed service transaxle with 2015 common hardware This 9-speed transaxle must be ordered thru Mopar?s Powertrain Service Center (PSC) for a specific VIN and must be installed in that vehicle or the correct calibration will not load to the Engine Control Module (ECM) and Transmission Control Module (TCM).~ This 9-speed transaxle assembly requires an update to the Engine Control Module AND the Transmission Control Module using WiTech. Failure to complete both updates will result in possible damage and/or incorrect operation of this unit.
68211004A2018-11-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. Shifter - Automatic Trans Before this part is replaced for any issue please call John Grzecki on cell (248) 379- 0969. If you do not receive a return call within 15 minutes, proceed with the repair. Please be sure to accurately record any DTCs identified with the scan tool and document them on the repair order.
68090604A2018-11-26. Service bulletin. POWER TRAIN; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). Power Transfer Unit Prior to replacing the PTU, please review the following .~ Check if the service 4WD light is intermittent by driving under heavy throttle will produce a C1494-92 DTC, if yes, please call FCA axle engineering and do not replace the PTU. Bruce Michel at cell (248) 260-8641, or Jian Zhu at cell (248) 379- 1132. If neither answers with 15 minutes then proceed with the repair. ~ If the service 4WD light lamp is on steady then replace the Power Transfer Unit.
RL300150A$2018-06-11. Service bulletin. POWER TRAIN. AS69RC Transmission For DD, DF, and DP Models ONLY; Code P2757 ? TCC PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE~ Transmission Part Numbers: RL300150AA [4x4], or RL300149AA [4x2 LHS PTO], RL300152AB 4x2 RHS PTO]~ If you are ordering an Aisin Transmission AS69RC [sales code DF2] for replacement due to code P2757 present [for 2016MY only] with the following symptoms:~ 1. Code P2757 with MIL on [Check engine light on]~ 2. Harness check is good~ 3. Vehicle build dates are from 10/15/2015 to 4/17/2016~ 4. Low miles - approximately below 1500 miles.~ Suggested repair actions:~ 1. Clear the code and test drive with light throttle attempting to engage torque converter lock up. The code P2757 will set, if torque converter lock up fails.~ 2. If the code P2757 returns: Replace Torque Converter [Part number RL335702AA] only.~ 3. Return the suspect Torque converter to FCA for review. [Follow Part retention process]
Revised T132018-06-11. Service bulletin. POWER TRAIN. Customer Satisfaction Notification T13 Manual Transmission Shift Lever The manual transmission shift lever rubber insert on about 4,300 vehicles may not have properly adhered to the metal shifter housing during the shifter manufacturing process. This condition could cause looseness in the gear shift lever, noise, and additional effort to move the shifter into the selected gear. The manual transmission shift lever must be replaced on all involved vehicles.
T132018-06-11. Service bulletin. POWER TRAIN. Customer Satisfaction Notification T13 Manual Transmission Shift Lever The manual transmission shift lever rubber insert on about 4,300 vehicles may not have properly adhered to the metal shifter housing during the shifter manufacturing process. This condition could cause looseness in the gear shift lever, noise, and additional effort to move the shifter into the selected gear. The manual transmission shift lever must be replaced on all involved vehicles.
RL305553A2018-06-11. Service bulletin. POWER TRAIN. 9-spd Transmission: FOR NAFTA Market Only: If you are ordering this transmission please follow all wiTECH pop ups and Warranty Payment Guidelines. If this vehicle contains 1 of the 30 Diagnostic Codes in the 9 Speed Tutorial located on the Service Home Page then please follow the repair steps and submit a Topology report as well as a Vehicle Scan Report with the Warranty Claim.~
05086755A$2018-06-11. Service bulletin. POWER TRAIN. Rear Crank Shaft Oil Seal and retainer plate For Cummins engines only If replacing Rear Main Seal for oil leak, replace seal and retainer as a set. Please do not disturb seal in retainer.~ Cummins Engineering is currently investigating the root cause of the oil leak concern. If there are any questions, please contact Chad Eichbrecht at cell (248) 309-2695 If you do not receive a response within 15 minutes, please proceed with normal repair.
BJA465972018-06-11. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN. Job aid - If you have a suspected TC shudder/vibration, check the Interactive Network for Service Bulletins for the vehicle you are working on. A test-drive snap shot may help you isolate the source of the issue.
21-005-162017-11-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience one or more of the following conditions: · A harsh 1-2 upshift. · Excessive gear shifting.
21-004-162017-11-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience one or more of the following conditions: · A harsh 1-2 upshift. · Excessive gear shifting.
21-027-16 REV. A2017-11-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Transmission Torque Converter Replacement Due To Dislodged Snap Ring This bulletin involves replacing the torque converter after verifying that an internal snap ring has dislodged. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) set in the Transmission Control Module (TCM) memory: · P2757-00 - TCC Pressure Control Solenoid Control Circuit Performance.
18-082-162017-11-03. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; POWER TRAIN. Flash: 6.4L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs: · **P0335 - Crankshaft Position Sensor Circuit. · P2610 - PCM Internal Engine Off Timer Performance.** · P0456 - EVAP System Small Leak. · P3402 - Cylinder 1 Deactivation Control Performance. · P3426 - Cylinder 4 Deactivation Control Performance. · P3442 - Cylinder 6 Deactivation Control Performance. · P3450 - Cylinder 7 Deactivation Control Performance. · P2610 - PCM Internal Engine Off Timer Performance set in the PCM memory. In addition to the DTCs listed above, the software update will improve: · **Correct an issue related to rounding of the cruise control set speed displayed in the cluster. · Brake Throttle Override calibration has changed to be less sensitive. · Throttle Body supplier change has caused a widening of the minimum and maximum voltage limits · Correct a software issue with oil pressure light function at key-up. · Correct a software issue related to idle timer. · Correct a software issue with inconsistent engine RPM increments/decrements with operator idle speed.(DD/DF/DP ONLY).** · Improved Cruise Control Acceleration mode. · Improved Multi Displacement System operation 6-Speed Automatic 66RFE transmission (Sales Code DFP). · Multi Displacement System function improved while in PTO stationary mode. 6-Speed Auto Aisin AS66RC transmission (Sales Code DF3). · Potential small improvement in fuel economy at higher altitudes. · Potential improvement in high altitude engine idle RPM stability. · EGR monitor status function.
21-005-16 REV. A2017-10-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience one or more of the following conditions: · A harsh 1-2 upshift. · Excessive gear shifting.
21-027-162017-07-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. "Transmission Torque Converter Replacement Due To Dislodged Snap Ring This bulletin involves replacing the torque converter after verifying that an internal snap ring has dislodged. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) set in the Transmission Control Module (TCM) memory: · P2757-00 - TCC Pressure Control Solenoid Control Circuit Performance."

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