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Service bulletins for the 2021 Ram 1500

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.

1129 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
91004982025-02-12. Service bulletin. ENGINE. "3.6L PSU Long Block Misfire DTC codes and/or rough idle and/or valvetrain noise. These conditions may be related to worn intake camshaft high lift lobe(s), and intake rocker arm(s) high lift slider. High mileage failure (10,000-60,000 miles). 1. Remove the valve cover(s) per the released service procedures. The use of a stethoscope or DTC specific cylinder misfire codes can help to locate the condition to the left or right bank. 2. Once it has been visually confirmed that there is wear on the high lift intake lobe(s) & rocker arm(s) slider, there is a special service kit for this type of repair which should be used, instead of replacing the complete engine/long block. This kit contains the parts required for the repair (intake cam, rocker arms, sealer and gaskets)."
03-001-252025-02-11. Service bulletin. POWER TRAIN. "Clicking Noise While In 4WD ustomers may experience the following: ● Ratcheting, click, or clicking noise in 4WD while turning. his bulletin involves replacing the front driveshaft"
1029502025-02-04. Service bulletin. SERVICE BRAKES. MODULE - ANTI-LOCK BRAKE SYSTEM
1029482025-02-04. Service bulletin. SERVICE BRAKES. MODULE - ANTI-LOCK BRAKE SYSTEM
21-009-25 REV.A2025-02-04. Service bulletin. POWER TRAIN. "D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. Customers may also comment on one or more of the following: ● Transmission slips when shifting. ● Vehicle will not move in reverse. ● Vehicle will not shift higher than third gear. This bulletin involves replacing the D clutch"
90039802025-01-29. Service bulletin. ELECTRICAL SYSTEM. SWITCH Headlamp Before replacing the Headlamp Switch for faulty dimmer operation. Please follow the next steps to corroborate if the Headlamp Switch is malfunctioning: 1.- Please disconnect and reconnect the headlamp Switch. And verify if the issue is corrected. 2.- Review the internal resistance of the switch: a.- For the Right Dimmer (IP) between Pins 6 & 3. The value should be around 5.74 KOhms, when in the lowest position to 311 ohms in the top position (Parade Detent). b.- For the left Dimmer (Ambient Light) between pins 8 & 3. The value should be around 14.52 KOhms, when in the lowest position to 182 ohms in the top position. If a problem is found in the resistor values. Please replace the Switch.
S1408000384 REV.H2025-01-28. Service bulletin. ELECTRICAL SYSTEM. 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
21-009-252025-01-22. Service bulletin. POWER TRAIN. D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. **Customers may also comment on one or more of the following: ● Transmission slips when shifting. ● Vehicle will not move in reverse. ● Vehicle will not shift higher than third gear.** This bulletin involves replacing the D clutch."
9100460 REV12025-01-21. Service bulletin. SUSPENSION. ARM Lower Control WHAT: Clunking noise from Front Stabar link to Front Lower Control Arm (FLCA). WHY: The joint is coming loose due to loss of clamp load when there is embedment on FLCA mating surface to the stabar link ball stud. We are currently updating the stabar link design and new design will be implemented in March 2025. HOW: If this Front stabar link to FLCA joint torque is under the residual torque of 70Nm, please retorque the joint to this spec of 110 (Min 70-Max 138). Otherwise proceed with regular diagnosis.
S25230000052025-01-21. Service bulletin. SERVICE BRAKES. "Squeak Noise From Brake Pedal When Pressed And Or Released."
S25230000032025-01-16. Service bulletin. STRUCTURE:BODY. Door Latch, Handle And Ajar Additional Service Information.
S1408000384 REV.G2025-01-09. Service bulletin. ELECTRICAL SYSTEM. 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
S24080001302025-01-03. Service bulletin. WHEELS; ELECTRICAL SYSTEM. Changing Tires to a Larger Size Triggers a Park Assist Module (PAM/PTS) to Set Diagnostic Trouble Code (DTC) B222A Vehicle Line Mismatch
91004682024-12-20. Service bulletin. UNKNOWN OR OTHER. FUEL VAPOR CANISTER FILTER EVAP Fuel Filters are to be checked for restriction / blockage on a regular schedule as indicated in the Owner s Manual. If the Filter is restricted or blocked then replace the part. For customers that drive light duty trucks in extreme dusty and dirty road conditions, please reference information only TSB 25-009-24 for an available MOPAR Dual EVAP Filter kit that is customer paid.
21-039-24 REV. H2024-12-18. Service bulletin. POWER TRAIN. "D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. This bulletin involves replacing the D clutch"
S2208000045 REV.B2024-12-11. Service bulletin. BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING. Backup Camera Poor Image Quality Inspection
25-009-242024-12-10. Service bulletin. UNKNOWN OR OTHER. "Dual EVAP System Extreme Duty Vapor Canister Filter Kit Customers operating fleet or severe/extreme duty gasoline vehicles in continuous dusty driving conditions can plug the single OE filter system and may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0441 - EVAP Purge System Performance. ● P062A - Fuel Pump Control Performance. Customers may also experience one or more of the following: ● Hard to fill fuel tank with fuel. ● Premature shut-off of the gas nozzle when refueling. ● Flow back of fuel while refueling. "
91004602024-12-10. Service bulletin. SUSPENSION. ARM Lower Control WHAT: Clunking noise from Front Stabar link to Front Lower Control Arm (FLCA). WHY: The joint is coming loose due to loss of clamp load when there is severe embedment on FLCA mating surface to the stabar link ball stud. We are currently updating the stabar link design and new design will be implemented in March 2025. HOW: If this Front stabar link to FLCA joint torque is under the residual torque of 70Nm, please retorque the joint to this spec of 110 (Min 70-Max 138). Otherwise proceed with regular diagnosis.
1017892024-12-03. Service bulletin. SUSPENSION. BUSHING - STABILIZER BAR
1019352024-12-03. Service bulletin. STRUCTURE:BODY. GLASS - BACKLITE
1019362024-12-03. Service bulletin. STRUCTURE:BODY. GLASS - BACKLITE
S2422000001 REV.C2024-11-13. Service bulletin. WHEELS; ELECTRICAL SYSTEM. Tire Pressure Monitor (TPM) Service Information. TPM Lamp On.
21-055-242024-11-07. Service bulletin. POWER TRAIN. "Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● **P0731 - Gear 1 Shift Incorrect Ratio.** The customer may describe the following: ● **Severe bump or clunk during high engine rpm and low vehicle speed 1-2 upshift.** ● Unable to set desired gear manually from the steering wheel controls This bulletin involves reprogramming the TCM with the latest available software."
21-039-24 REV. G2024-11-07. Service bulletin. POWER TRAIN. "D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. This bulletin involves replacing the D clutch."
1012322024-11-07. Service bulletin. POWER TRAIN. Plate - Planetary

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