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Service bulletins for the 2020 Ram 2500

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
S18210000062020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; TIRES. Oversized Tire Calibration For Customized Jeep Wrangler, Gladiator, 2019 Ram Heavy Duty DJ, MVP Update Required, MVP Hotline
S20180000072020-07-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. Diagnostic Trouble Code (DTC) P0299 ? Turbocharger Underboost Additional Diagnostics
S20080000772020-07-27. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. VP2R Radio Clock Not Keeping Time
S20180000052020-06-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); EQUIPMENT. Malfunction Indicator Lamp (MIL) Illuminated. Diagnostic Trouble Code (DTC) P046C ? Exhaust Gas Recirculation Temperature Sensor ?A? Circuit Low Set.
S18210000062020-06-22. Service bulletin. TIRES. Oversized Tire Calibration For Customized Jeep Wrangler And Galdiator, 2019 Ram Heavy Duty DJ, MVP Update Required, MVP Hotline
S20080000732020-06-22. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. VP4 Panasonic Radio USB Software Update Error Codes And Guidelines For Recovery
S20090000022020-06-22. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. Oil Leak From The Front Timing Gear Housing Gasket. (Note: ETL, ETK, ETM, ETN Diesel Engines)
S16250000072020-06-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P207F ? Reductant Quality Performance Set.
S19080001742020-06-22. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Screen Black At Vehicle Startup After A Sleep Cycle
90042452020-06-22. Service bulletin. STEERING:GEAR BOX (OTHER THAN RACK AND PINION); ENGINE AND ENGINE COOLING. GASKET, Timing Case Cover, Rear Gear Housing For 2017-2020 model years only. If you are replacing the timing housing gasket due to an oil leak, please take detailed pictures of the leak, and submit them to the Star Center. Once submitted, continue with the repair. During the repair, check the breakaway torque of the gear housing retaining bolts. If any are found to be loose, note the location of the loose bolt(s) in the Star case.
23-015-202020-05-26. Service bulletin. STRUCTURE; EQUIPMENT. Disinfectant Solution Recommended for COVID-19
08-049-202020-05-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Charging System, Battery Diagnostic Tools and Warranty This information only bulletin discusses using the correct test equipment for testing batteries and charging systems, and also warranty reimbursement when battery replacements are necessary.
18-039-202020-05-26. Service bulletin. FUEL SYSTEM, GASOLINE. Possible Driveability Issues due to the Winter-Blend Fuel into the Warmer Season
08-048-202020-05-26. Service bulletin. ELECTRICAL SYSTEM. UAX, UCX, UAV and UCV Radio Over the Air Software Version Updates This bulletin provides information regarding the latest Flash Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated to 33.3. Customers may experience one or more of the following:Display screen is back with no backlighting. GPS unable to load and find location. Bluetooth® device is slow to pair. Loss of saved radio presets. No audio output coming from the radio. Can not control audio volume. Radio "locks up" or freezes. Rear view camera display will not turn off. This is an ?Information Only? Service Bulletin to inform the dealer how the FOTA update is performed. This document does not contain a LOP for reimbursement.
18-005-20 REV. A2020-05-26. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the correct software. This vehiclemay have been programmed with incorrect software. The customer may experience Active Noise Control (ANC) system not working. Upon further investigation the technician may find the followingDiagnostic Trouble Codes (DTCs) has been set:B154F-64 - Lost Crankshaft Pulse Signal-Signal Plausibility Failure B154F-24 - Lost Crankshaft Pulse Signal-Signal Stuck High.
D-19-02 Rev. D2020-05-26. Service bulletin. ELECTRICAL SYSTEM. Fast Feedback Program ? 6.7L Cummins Engine - 2019 & 2020 HD Ram & 6.7L Cummins Diesel Engine Control Module (ECM) - 2018 Ram ? All Models (Rev. D)
S18080001522020-05-26. Service bulletin. ELECTRICAL SYSTEM. CEL (Check Engine Lamp) Illuminates, Recent PCM Replace Or Flash Update Performed, DTC P057B Brake Pedal Position Sensor Circuit Performance
S19080000652020-05-26. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. Cargo Camera Image Off Center
S19080000222020-05-26. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Navigation Search Feature Does Not Work
S20080000602020-05-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT. Radio Issues With iPhone 11
S20080000592020-05-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT. Error Code 20 Message On the Radio Screen
S20230000232020-05-26. Service bulletin. STRUCTURE:BODY:TAILGATE; STRUCTURE. Automatic drop tailgate inoperative or not lowering
S20080000482020-05-26. Service bulletin. EQUIPMENT. Phone Contacts Will Not Load
S20210000022020-05-26. Service bulletin. ELECTRICAL SYSTEM. Valve Body Pressure Testing Plug Inspection
S20080000522020-05-26. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. Service Trailer Brake Warning Message Displayed On The Cluster

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