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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

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
S23250000042023-05-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illuminated. Diagnostic Trouble Code (DTC) P2047 ? Reductant Injector 1/1 Circuit, Set.
S23230000172023-04-17. Service bulletin. POWER TRAIN. Enabling A New Power Side Step Module.
S1623000028 Rev.2023-02-13. Service bulletin. VEHICLE SPEED CONTROL; BACK OVER PREVENTION; POWER TRAIN; VISIBILITY; PARKING BRAKE. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
91001002023-02-13. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL. Front Drive Shaft If replacing DT 5.7L front propeller shaft for concerns of a noise, please contact FCA Redacted Content prior to ordering part to create a FasTrack for return to analyze. If no response in 15 min, proceed with repair.
18148222023-01-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Powertrain Control Module (PCM) Updates
1809122REVA2023-01-17. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTC: P219A - Bank 1 Fuel/Air Ratio Imbalance(North America Only). Customers may also experience one or more of the following: An engine stall at low engine mileage and mostly low vehicle speeds 16 - 24 kph (10 - 15 mph). LED light in the Start/Stop button will not illuminate when pressed.
S2121000015RevB2023-01-17. Service bulletin. POWER TRAIN. Driveline Clunk When Stopping Or Upon Take Off Launch Immediately After A Stop
03003212023-01-17. Service bulletin. POWER TRAIN. Front Axle Assembled With Incorrect Circlip This bulletin involves replacing the right side halfshaft circlip. Customers may comment on the following: There is a loud grinding noise from under the front passenger side of the vehicle.
21005212023-01-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the following on a vehicle with less than 644 km (400 miles) on the odometer: A Malfunction Indicator Lamp (MIL) event or failure withnoDiagnostic Trouble Codes (DTCs) and the vehicle has less than 644 km (400 miles) on the odometer indicates it is likely the vehicle has experienced an unintentional code clear event.Do not use this software update if vehicle odometer has over 644 km (400 miles).
21020212023-01-17. Service bulletin. POWER TRAIN; WHEELS; STEERING; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the follwing:Unable to set desired gear manually from the steering wheel controls.
21019212023-01-17. Service bulletin. STEERING; WHEELS; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the follwing:Unable to set desired gear manually from the steering wheel controls.
21018212023-01-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may describe one or more of the following:During a 2 - 3 transmission upshift, the engine is hitting rev limit. Hesitation feel during a pedal tip in, while engine is warming up below 1 °C (30 °F) ambient temp.
18050212023-01-17. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. 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: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up.
08086212023-01-17. Service bulletin. VISIBILITY; VEHICLE SPEED CONTROL; AIR BAGS; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Updates This bulletin involves reprogramming the DDM and PDM with the latest available software. This software is for vehicles on the RRT VIN List is to improve the function and reliability of the power windows operation.
18048212023-01-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience the following:LED light in the Start/Stop button will not illuminate when pressed.
23019212023-01-17. Service bulletin. POWER TRAIN; AIR BAGS. Power Side Steps Do Not Stow Or Deploy Properly This bulletin involves inspecting and if necessary replacing the driver or passenger power side step motor. Customers may notice one or more of the following:Power side steps do not stow or deploy properly. Information Panel Cluster (IPC) shows ?Obstacle Detection? fault.
742442023-01-17. Service bulletin. POWER TRAIN. Warranty Bulletin D-20-23 Part Order Restriction Program - 48V Power Pack Unit (PPU) - Select 2018 - 2021 Jeep Wrangler (JL) and 2019 - 2021 RAM (DT) (Rev. A)
0300422REVA2023-01-09. Service bulletin. POWER TRAIN:DRIVELINE:DRIVESHAFT. Rear Propshaft Clunk This bulletin involves removing the rear driveshaft and greasing the slip yoke splines. The customer may describe the following: A clunk noise from the driveshaft while coming to a stop or when juststarting to tip into throttle at take off.
03004222023-01-09. Service bulletin. POWER TRAIN. Rear Propshaft Clunk This bulletin involves removing the rear driveshaft and greasing the slip yoke splines. The customer may describe the following: A clunk noise from the driveshaft while coming to a stop or when juststarting to tip into throttle at take off.
S22210000032023-01-09. Service bulletin. POWER TRAIN. 8-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
08192222022-12-12. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Body Control Module (BCM) Updates This bulletin involves updating the BCM with the latest available software. Customer may experience one or more of the following condition: AUX switch ?recall last state? function does not work, only if equipped with a 6.2L Supercharged HEMI V8 SRT Engine (Sales Code ESD). AUX output always returns to OFF unless user selects battery power over ignition power feed, only if equipped (Sales Code ESD). Hill descent button is inoperative (Sales Code BNH).
18145222022-12-12. Service bulletin. POWER TRAIN; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. The customer may experience one or more of the following: Generic Scan Tool shows incorrect PCM Calibration Part Number and Emissions type:OBDI not OBDII(North America Only). Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit(DFS Sales Code Only). ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up. Customers may also experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigationthe technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration.
91000872022-12-12. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION:COLUMN SHIFT ASSEMBLY. Electronic Shift Module Customer is unable to shift the vehicle out of PARK - ESM (Electronic Shift Module) rotary knob is stuck in PARK position. Technician observes the vehicle is setting DTCs in the ESM, P0928-00 (ESM detects an internal error with the BTSI Solenoid) and P0705 (ESM controller detects an error with the internal shifter position sensor). Vehicles equipped with one of the following ESM part numbers (68171964AI, 68171965AK, 68517473AA, 68517474AA) with stored or active DTCs listed above should receive replacement shifter part numbers, 68517473AB (without transfer case switch) or 68517474AB (with transfer case switch).
18143222022-11-07. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Control Module (PCM) This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DiagnosticTrouble Code (DTC) has been set: P219A - Bank 1 Fuel/Air Ratio Imbalance.
0300422REVB2022-11-07. Service bulletin. POWER TRAIN. Rear Propshaft Clunk This bulletin involves removing the rear driveshaft and greasing the slip yoke splines. The customer may describe the following: A clunk noise from the driveshaft while coming to a stop or when juststarting to tip into throttle at take off.

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