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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
S2025000001 Rev.2020-12-28. Service bulletin. EXTERIOR LIGHTING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT. (Rev. B) Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20080001692020-12-28. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY:DOOR; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Drivers Front Window Makes Noise While Raising And Lowering
9004324 Rev. A2020-12-28. Service bulletin. STRUCTURE:BODY:DOOR; STRUCTURE:BODY:DOOR:HINGE AND ATTACHMENTS; EQUIPMENT. SEAL, REAR DOOR GLASS RUN Loose, deformed and torn door seals. If the door seal in question is being ordered for any of these conditions please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the area identifying the door and seal affected as well as the VIN of the vehicle and email pictures to FCA Redacted Content.
90043242020-12-28. Service bulletin. STRUCTURE:BODY:DOOR; VISIBILITY:GLASS, SIDE/REAR. SEAL, REAR DOOR GLASS RUN Loose, deformed and torn door seals. If the door seal in question is being ordered for any of these conditions please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the area identifying the door and seal affected as well as the VIN of the vehicle and email pictures to FCA Redacted Content
24-001-202020-12-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. HVAC Housing Service This bulletin informing the Technician about an HVAC housing redesign with components that need to be serviced together when servicing the HVAC housing. Customers may experience the following: Poor Air conditioning system performance (Slow or excess time to cool down). HVAC is slow to cool, left center instrument panel outlet is warmer than right side instrument panel outlets.
05-004-202020-12-21. Service bulletin. SERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Rear Brake (Moan) Noise This bulletin involves installing a rear brake anti-moan kit. The customer may comment on the following:A low frequency moan or howl noise from the rear brakes, primarily in cold/humid conditions, typically on the first brake stop in forward or reverse, after vehicle has been sitting for lengthy periods of time (cold brakes).
05-003-202020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES; EQUIPMENT. Brake Pedal with Booster Service This bulletin is informing the technician that when servicing the brake pedal or the brake booster both components need to be serviced together.
08-100-202020-12-21. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Incorrect Starter Motor Installed This bulletin involves inspecting and possible replacement of the starter motor, for a whining noise upon vehicle start up. The customer may hear a whining noise coming from the start motor when the vehicle is started.
S1908000102 Rev.2020-12-21. Service bulletin. EQUIPMENT:ELECTRICAL:AUX AUDIO JACK/PLUG. (Rev. A) Audio Mute On All Sources Except AM
S2008000126 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE. (Rev. B) RKE Has Reduced Range, Remote Start Inoperative, Multiple Keyless Go Push Attempts To Start
S1923000044 Rev.2020-12-21. Service bulletin. STRUCTURE:BODY. (Rev. D) Dust Intrusion Or Air Leak In Cab
S20080001722020-12-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
S1925000008 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE; FUEL SYSTEM, DIESEL. (Rev. B) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S1625000005 Rev.2020-12-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. (Rev. A) Malfunction Indicator Light (MIL) Illuminated. Service Diesel Exhaust Fluid (DEF) System ? See Dealer Soon Message on Electronic Vehicle Information Center (EVIC) Along With Possible Diagnostic Trouble Code (DTC) P241D - SCR Inducement - Forced Engine Shutdown.
S20080001712020-12-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC Blower Motor Operates Intermittently Or Changes Speeds
S2025000001 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). (Rev. B) Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20080001692020-12-21. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Drivers Front Window Makes Noise While Raising And Lowering
9004324 Rev. A2020-12-21. Service bulletin. STRUCTURE:BODY:DOOR; EQUIPMENT. SEAL, REAR DOOR GLASS RUN Loose, deformed and torn door seals. If the door seal in question is being ordered for any of these conditions please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the area identifying the door and seal affected as well as the VIN of the vehicle and email pictures to FCA Redacted Content.
90043242020-12-21. Service bulletin. EQUIPMENT; STRUCTURE:BODY:DOOR. SEAL, REAR DOOR GLASS RUN Loose, deformed and torn door seals. If the door seal in question is being ordered for any of these conditions please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the area identifying the door and seal affected as well as the VIN of the vehicle and email pictures to FCA Redacted Content
23-025-202020-11-30. Service bulletin. EQUIPMENT; STRUCTURE:BODY:TAILGATE. Tailgate Cable Has Excessive Slack or is Loose This bulletin involves replacing one of the tailgate cables with a new tailgate service cable. The customer may comment on one or more of the following:One tailgate cable has too much slack or is loose. The tailgate cables are different lengths.
31-002-202020-11-30. Service bulletin. STRUCTURE. Aluminum Body Panel Corrosion Repair This bulletin involves inspecting and if necessary removing corrosion and refinishingthe suspect aluminum panels on the vehicle, hood, door, fenders, hinges, swing gates or liftgate panels.
02-002-20 REV. A2020-11-30. Service bulletin. STEERING; SUSPENSION. Steering Wheel Off Center This bulletin involves adjusting the front toe to correct a steering wheel off center condition. This is due to an inaccurate alignment settings from the plant. The customer may describe the steering wheel is off center.
02-002-202020-11-30. Service bulletin. SUSPENSION; STEERING. Steering Wheel Off Center This bulletin involves adjusting the front toe to correct a steering wheel off center condition. This is due to an inaccurate alignment settings from the plant. The customer may describe the steering wheel is off center.
08-094-202020-11-30. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); EQUIPMENT. Flash: Drivetrain Control Module (DTCM) Update This bulletin involves reprogramming the DTCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set::If the customer has any concerns with the transfer case or if the tech performs any repairs on the transfer case, the software must be updated.C140E - Transfer Case Motor Blocked. If DTC C140E is present, follow normal diagnostic procedures before updating the DTCM.In addition the customer may describe the following:The ?Service 4WD? message/fault is displayed in the Instrument Panel Cluster (IPC). Transfer case shift fork tabs broken during range shift. Noisy (clunking/ratcheting) transfer case range shifts. Failure to complete transfer case range shifts. The following software enhancement is available:This update will help reduce premature transfer case failure.
03-002-202020-11-30. Service bulletin. SUSPENSION:MULTIPLE AXLE; SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION:LINES AND FITTINGS. Front Axle Noise While in 4WD Mode This bulletin involves replacing the front axle assembly. The customer may experience a growling noise from the front axle which is more noticeable at lower speeds in 4WD mode.

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