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: Suspension are shown. Show all
| 02-002-25 REV. A | 2025-09-17. Service bulletin. SUSPENSION. Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts. |
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| 02-002-25 | 2025-05-30. Service bulletin. SUSPENSION. "Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts. " |
| 9100229 | 2023-10-30. Service bulletin. SUSPENSION. LIFTER, Hydraulic Roller Deactivating Please do not replace MDS lifters because the disconnecting pin is not lined up, this is normal and not a defect. |
| 02-003-21 | 2022-08-22. Service bulletin. ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); SUSPENSION:FRONT:SHOCK ABSORBER; SUSPENSION. Noise in Front Over Bumps This bulletin involves checking the front shock absorbers Julian date (build date) and replacing if required. The customer may describe the following:Clunk in front suspension when driving over pot holes. |
| 75745 | 2022-05-31. Service bulletin. SUSPENSION:FRONT:HUB; SUSPENSION:FRONT:WHEEL BEARING. HUB AND BEARING - WHEEL |
| S2121000010 | 2021-06-28. Service bulletin. SUSPENSION. Service 4WD Lamp On, 4WD System Does Not Work, 4WD Service Lamp Flashing, Front Axle Disconnect Does Not Engage Or Disengage |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.