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Service bulletins for the 2021 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.

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

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Only bulletins with component: Suspension are shown. Show all

Bulletins, newest first
02-002-25 REV. A2025-09-17. Service bulletin. SUSPENSION. Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts.
02-002-252025-05-30. Service bulletin. SUSPENSION. "Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts. "
91002292023-10-30. 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.
90043832022-10-17. Service bulletin. SUSPENSION:FRONT:SPRINGS:TORSION BAR. TORSION ROD, Storage Bin (Rambox) If the Rambox storage bin Torsion Rods are being replaced for the lid not opening issue, replace the complete Rambox Bin and Lid assembly with all of the sub components instead of just replacing the Torsion Rods only. Please ship the complete Rambox Bin and Lid assembly without dis-assembling the lid or hinges to QEC. Please contact FCA Redacted Content to set up the part return to QEC. If no response in 15 minutes, proceed with repair.
S19170000022022-09-26. Service bulletin. ELECTRICAL SYSTEM; SUSPENSION. ASCM U0132 Loss Of Communication With Suspension Control Module (IPC) DTC
757452022-05-31. Service bulletin. SUSPENSION:FRONT:HUB; SUSPENSION:FRONT:WHEEL BEARING. HUB AND BEARING - WHEEL
08-175-212021-12-13. Service bulletin. SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM; ELECTRICAL SYSTEM; SUSPENSION; SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM. Flash: Air Suspension Control Module (ASCM) Updates This bulletin involves reprogramming the ASCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:U0132 - Loss of Communication with Air Suspension Control Module. C15E1-97 - Left Rear Air Spring Intake - Component or System Operation Obstructed or Blocked. C220C-48 - Active Suspension Module Internal-Supervision Software Failure(2019 MY Only). C211B-92 - Ignition Run/Start Input-Performance Or Incorrect Operation(2019 MY Only). C156C-7A - Ride Height System Air Leak-Fluid Leak Or Seal Failure(2019 MY Only). In addition the customer may describe:Air suspension system is inoperable. During key ?On? or while driving, the ?service air suspension? light illuminates. Air spring deflated or ruptured. Right/left rear suspensions sits lower than the other side. Chime and "Service Air Suspension Immediately" message appeared in the cluster for 5 seconds. Excessive operation or noise from air suspension system when vehicle is stationary(2019 MY Only). "Air Suspension Disabled" message when attempting Bed Lowering Mode (BLM)(2019 MY Only). Excessive compressor valve cycling following a cold start(2019 MY with Diesel engine only). Erroneous "Bed Low Achieved" message through the Instrument Panel Cluster (IPC), when requesting lowering, even though the truck didn't physically lower. Ride height changes/valve actuations without operator request on rough roads.
S21210000102021-06-28. Service bulletin. SUSPENSION. Service 4WD Lamp On, 4WD System Does Not Work, 4WD Service Lamp Flashing, Front Axle Disconnect Does Not Engage Or Disengage
S1917000002 Rev.2021-05-24. Service bulletin. ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); ELECTRICAL SYSTEM; SUSPENSION. ASCM U0132 Loss Of Communication With Suspension Control Module (IPC) DTC
90020542021-03-22. Service bulletin. STEERING; SUSPENSION. If replacing the steering linkage or drag link inner tie rod assembly at the pitman arm on a vehicle built before Febuary 14 th, 2008, verify that the pitman arm part number is 68039930AA. The part number is embossed on the pitman arm.~If the pitman arm is not a 68039930AA, it must be replaced with a 68039930AA.~ Issue 2: For 2003 to 2007 MY only. If the OE steering linkage has been replaced with 52122362AA, 52122362AB, 52122362AC, 52122362AD, 52122362AE, or 52122362AF and pitman arm 68039930AA the following service parts are available.

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