Service bulletins for the 2021 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.
445 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Labels and manuals are shown. Show all
| 93120 | 2023-10-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. FCA Caribbean Warranty Bulletin ID-23-20 "Can / Am" Warranty Coverage - 594 / 595 / 596 WCC |
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| 93023 | 2023-10-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Warranty Bulletin D-16-03 - "Can / Am" Warranty Coverage - 594 / 595 / 596 WCC (Rev. B) |
| 9100196 | 2023-09-25. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Lubrication and Maintenance Fluids If MOPAR fluids and chemicals are not readily available, please review Service Library for specifications so a suitable alternative can be used |
| S2318000001 | 2023-02-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Diagnostic Trouble Code (DTC) P1400 ? Aftermarket Calibration Detected/Warranty Coverage Confirmation Required, Setting Falsely. |
| 09-014-22 | 2023-01-17. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Diesel Particulate Filter (DPF) - X97 Warranty Extension Installation of particulate matter sensor. This bulletin involves extending the warranty on the DPF. NOTE: This is an ?Information Only? Technical Service Bulletin to inform the dealer of this warranty Extension. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.