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Service bulletins for the 2020 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.

1228 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
S2423000027 REV.A2024-09-06. Service bulletin. ELECTRICAL SYSTEM. Horn Sound Is Weak, Off Tone, Or Inoperative.
S23080001552024-09-04. Service bulletin. ELECTRICAL SYSTEM. Water Intrusion Of The RFH Causes Erratic Operation Of Start/Stop Button And Other RFH Functions Accompanied By Multiple RFH DTCs
S2023000024 REV.C2024-08-19. Service bulletin. STRUCTURE:BODY. Water Leak Rear Of Cab Rear Seat Or Headliner
S24230000392024-08-19. Service bulletin. ELECTRICAL SYSTEM. Wiper Motor Inoperative. Wiper Doesn’t Work or Stops Randomly On Glass
21-039-24 REV. B2024-08-13. 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."
993992024-07-31. Other. SERVICE BRAKES. MODULE - ANTI-LOCK BRAKE SYSTEM
995002024-07-31. Other. POWER TRAIN. CARRIER – PLANETARY & SHAFT KIT - OUTPUT
31-001-242024-07-30. Service bulletin. STRUCTURE:BODY. "Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading edge of hood, hinges or other exterior surface areas of the hinges, doors, fenders, swing gates or liftgates. NOTE: Verify current warranty policy to determine if digital imaging pre-authorization is required or pre-approval is required from the Regional Office; depending on market. This bulletin involves inspecting and if necessary removing corrosion and refinishing the suspect aluminum panels on the vehicle, hood, door, fenders, hinges, swing gates or liftgate panels."
91003902024-07-18. Service bulletin. POWER TRAIN. D Clutch Repair Kit TSB 21-039-24 REV A - D-Clutch repair kit missing Carrier Output Shaft Seals It has been identified the Carrier Output Shaft is missing 2 seals for some of the kits delivered to dealers. These seals are not available individually. MOPAR is working to get the parts. Do not rebuild the transmission without these seals otherwise the vehicle will not have reverse. Please refer to STAR Online Publication S2421000001 for instructions for inspecting if the seals are present on the Output Shaft Carrier Shaft. If seals are missing, please return the D-Clutch Kit as defective and order another kit. Transmission replacement is not recommended as this issue should be solved with replacement kits.
9100390 Rev12024-07-18. Service bulletin. POWER TRAIN. D Clutch Repair Kit TSB 21-039-24 REV A - D-Clutch repair kit missing Carrier Output Shaft Seals It has been identified the Carrier Output Shaft is missing 2 seals for some of the kits delivered to dealers. These seals are not available individually. MOPAR is working to get the parts. Do not rebuild the transmission without these seals otherwise the vehicle will not have reverse. Please refer to STAR Online Publication S2421000001 for instructions for inspecting if the seals are present on the Output Shaft Carrier Shaft. If seals are missing, please return the D-Clutch Kit as defective and order another kit. Transmission replacement is not recommended as this issue should be solved with replacement kits
09-001-24 REV. C2024-07-17. Service bulletin. ENGINE. "Cold Engine Ticking Noise The customer may describe a ticking noise from the exhaust manifold location(s) when cold."
S2408000015 REV.C2024-07-10. Service bulletin. ELECTRICAL SYSTEM. Remote Keyless Entry (RKE) Functions Do Not Work, Intermittent Vehicle Response When Using the RKE, Key Not Programmed, Adding Remote Start
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 "
03-006-242024-07-02. Service bulletin. POWER TRAIN. "Rear Axle Vibration Shudder Or Chatter Customers may experience the following: ● A chatter, shudder, or vibration from the rear axle during turns. NOTE: This may happen more as the vehicle ages, especially if the vehicle is used extensively for towing or hauling heavy loads. The cause of the concern may be due to degradation of the rear axle fluid. It is very important to follow the routine maintenance schedules on these vehicles when it comes to changing the rear axle fluid if the vehicle is used primarily for towing or hauling heavy loads. If you experience a vehicle with the above condition, please perform the proper maintenance procedures for the rear axle and replace the fluid first before replacing any hardware components. NOTE: This service bulletin is only applicable to vehicles that have no history of an axle fluid replacement. If the vehicle usage includes police, taxi, fleet, off-road or frequent trailer towing, regular axle fluid changes are required every 3 years or 30,000 miles (whichever comes first) per the Maintenance Schedule in the vehicle Owner's Manual. This bulletin involves changing the rear axle lube to possibly address a chatter, shudder or vibration."
960762024-07-02. Other. VISIBILITY/WIPER. MOTOR - WINDSHIELD WIPER & WIPERUNIT - WINDSHIELD WIPER
S24020000012024-07-02. Service bulletin. SUSPENSION. Clunking Noise From Front Stabilizer Bar / Sway Bar Link.
989272024-06-26. Other. VISIBILITY/WIPER. MOTOR - WINDSHIELD WIPER & WIPERUNIT - WINDSHIELD WIPER
21-039-24 REV. A2024-06-18. Service bulletin. POWER TRAIN. "D Clutch Repair Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● 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."
23-042-242024-06-12. Service bulletin. STRUCTURE:BODY. "Back Glass Water Leak Warranty Extension XL1 The customer may experience one or more of the following: ● A cracked backlite frame Fig. 1 resulting in an interior water leak (crack is visible to the customer). ● Water leak from at top of the backlite. This bulletin involves applying urethane to the sliding backlite."
S2307000002 REV.B2024-06-11. Service bulletin. ENGINE. Suspected Engine Coolant Leak
21-039-242024-06-07. Service bulletin. POWER TRAIN. "D Clutch Repair Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● 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."
S24080000502024-06-07. Service bulletin. ELECTRICAL SYSTEM. After A Recent Service Repair The Vehicle is Setting Diagnostic Trouble Codes (DTCs) B0090-49 Left Frontal Acceleration Sensor-Internal Electronic Failure, B0095- 49 Right Frontal Acceleration Sensor-Internal Electronic Failure
S2423000024 REV.A2024-06-05. Service bulletin. ELECTRICAL SYSTEM. Door Ajar Light On With Door(s) Closed.
S24230000272024-06-05. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. Horn Sound Is Weak, Off Tone, Or Inoperative
S1908000050 REV.A2024-06-05. Service bulletin. ELECTRICAL SYSTEM. Checking Radio Software Level On A VP2 Radio

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