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Service bulletins for the 2023 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.

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

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
1004982024-11-01. Service bulletin. ENGINE. MODULE - ENGINE CONTROLLER
S24090000022024-07-18. Service bulletin. ENGINE. Perceived Oil Leak From The Rear Of The Engine
S1408000384 REV.F2024-07-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE. "Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On "
S24180000092024-06-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Malfunction Indicator Lamp (MIL) Illumination. One Or More Exhaust Temperature Sensor (EGT) Diagnostic Trouble Codes (DTCs), Set.
9100338REV12024-06-04. Service bulletin. ENGINE. "GENERATOR Engine Prior to alternator/generator removal: 1. Inspect & check all electrical connections to the alternator a. 2-way connector containing field control circuit & alternator sense voltage circuit. b. Unplug & plug-in the 2-way connector for field & sense circuit. Verify the connection is tight & check for any bent pins in alternator connector or damage to female terminals in connector. c. Check Alternator B+ Stud connection to be sure nut is securing positive cable terminal properly (i.e. nut is clamping terminal & connection is tight). d. Check fuse between the alternator B+ stud & PDC terminal to make sure it is not blown. e. Be sure to follow service manual sections on ALTERNATOR CONTROL CIRCUIT DIAGNOSTIC & ALTERNATOR SENSE CIRCUIT DIAGNOSTIC looking for any opens & shorts (to ground or battery voltage). 2. Check/verify all grounds in the charging system circuit a. Check tightness of mounting bolts securing alternator to engine block. Alternator is a case ground component. b. Check main ground from engine to chassis; connection must be tight. c. Check battery ground cable connections are tight. d. Potentially, loosen alternator mounting bolts, without removing alternator, and re-tighten to torque specifications in service manual. e. After all steps above are complete, re-start engine & check charging system operation. 3. Verify that the Smart Charging System is not the reason for alternator low voltage & current output (Amps). a. Alternator charging can be suspended during engine idle operation because of the Smart Charge strategy. b. Refer to service manual section ""System Operation - Smart Charging System"". c. Refer to Star Case S2008000031 Rev A for low charging voltage & Smart Charge Mode Voltage Range diagram & mode descriptions. d. The alternator has no internal regulator; thus, has no smart circuitry. All alternator control signals come from ECM. 4. If alternator is faulty, remove alternator & mounting bolts. Return alternator with bolts for analysis at QEC."
983542024-05-31. Other. ENGINE. Valve - EGR
981712024-05-31. Other. ENGINE; ELECTRICAL SYSTEM. MODULE - ENGINE CONTROLLER
91002642024-01-16. Service bulletin. ENGINE AND ENGINE COOLING. PSU Oil Pump Assy
S23180000122024-01-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P2580 ? Turbocharger Speed Sensor Circuit Low, Set.
09013232023-09-25. Service bulletin. ENGINE AND ENGINE COOLING. 6.7L New Oil Usage Information Incorrect oil used. This bulletin provides information regarding the correct oil grade to use on the 6.7L Cummins used in the 2023 to 2013 HD Trucks. The following information is intended to eliminate confusion.
S21090000112023-09-25. Service bulletin. ENGINE AND ENGINE COOLING. Squeak, Chirp, Or Tick Noise From The Serpentine Belt Area. Additional Diagnostics.
03003232023-08-21. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Clicking Noise While In 4wd Ratcheting, Click, or Clicking noise in 4WD while turning. This bulletin involves replacing the front driveshaft.
18072232023-08-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Engine Control Module (ECM) Capacitor Leak Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0642 - Sensor Reference Voltage 1 Circuit Low. ? P0652 - Sensor Reference Voltage 2 Low. ? P06D3 - Sensor Reference Voltage 5 Circuit Low. ? P0102 - Mass Air Flow Sensor A Circuit Low. ? P0750 - Shift Solenoid 1 Control Circuit - Open. ? P0755 - Shift Solenoid 2 Control Circuit - Open. ? P0706 - Transmission Range Sensor Rationality. ? P0765 - Shift Solenoid D. ? P0770 - Shift Solenoid E. ? P2761 - Torque Converter Clutch Pressure Control Solenoid Control Circuit-Open. In addition, the customer may experience the following: ? An engine no crank/start. This bulletin involves performing an extended idle test and possibly replacing the ECM.
S23230000212023-07-31. Service bulletin. ENGINE AND ENGINE COOLING. Clunk Noise From Front End Driving Between 15 And 35 MPH And When Decelerating. C0604- Active Air Dam Control Performance
07007232023-07-31. Service bulletin. ENGINE AND ENGINE COOLING. Water Quality When Mixed With Engine Coolant
18048232023-05-30. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
S23030000022023-05-30. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Ratchet Type Click, Clicking Noise Heard In Four Wheel Drive (4WD) While Turning.
91001032023-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Engine Oil - 0W20,Fluid - ATF+4,Engine Oil - 10W30,Engine Oil - 5W20,Engine Oil - 5W30
S22070000032023-01-17. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Suspected Internal Exhaust Gas Recirculation (EGR) Cooler Coolant Leak, Additional Diagnostics.
851362023-01-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM. Warranty Bulletin D-22-07 Parts Order Restriction Program - Engine Control Module (ECM) - Select 2022 and 2023 Ram 2500 Pickup (DJ), 2022 and 2023 Ram 3500 Pickup (D2), 2022 and 2023 Ram 3500 Cab Chassis (DD) and 2022 and 2023 4500/5500 Ram Cab Chassis (DP) (Rev. A)
851362022-10-31. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Warranty Bulletin D-22-07 Parts Order Restriction Program - Engine Control Module (ECM) - Select 2022 and 2023 Ram 2500 Pickup (DJ), 2022 and 2023 Ram 3500 Pickup (D2), 2022 and 2023 Ram 3500 Cab Chassis (DD) and 2022 and 2023 4500/5500 Ram Cab Chassis (DP) (Rev. A) (document published on 8/5/22 with incorrect date on communication of 8/4/22)

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