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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.

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By component

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
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.
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.
90042482020-05-26. Service bulletin. ENGINE AND ENGINE COOLING. Compressor RAM HD/CC. For AC Compressor, If you detected any issue related with: The AC blows warm air, Not Cold, Not cold enough. There is an investigation in the HVAC system If you detected an issue in the HVAC system, follow the procedure "Heating and Air Conditioning Diagnosis and Testing (A/C PERFORMANCE)" Prior to replacement compressor please check first the Temperature on the Evaporator: at 5°C +/- 2 °C & compressor cycling. If you review it and the compressor gets the temperature & it cycling, please continue to your work in other possible HVAC issue. If you have any question or you need more information you can contact us by phone or email contact FCA Redacted Content or by email: FCA Redacted Content If no response in 15 minutes, proceed with repair.
90042452020-05-26. Service bulletin. ENGINE AND ENGINE COOLING; PARKING BRAKE. Gasket, Timing Gear Housing For 2019, and 2020 Model Year 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.
S19180000032020-04-06. Service bulletin. ENGINE. Intermittent Engine Buck, Surge, or Misfire.
18-089-192019-12-16. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK

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