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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
S1924000019RevA2022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Customer Indicates That Temperature Varies From Side To Side Being Colder On One Side Compared To The Other.
S2024000003RevC2022-09-26. Service bulletin. STRUCTURE. Customer Indicates A Whistle Noise From Dash During Certain Driving Parameters.
S2119000001RevA2022-09-26. Service bulletin. BACK OVER PREVENTION; STEERING. Click Pop Creak Noise While Turning Steering Wheel
S21140000012022-09-26. Service bulletin. VEHICLE SPEED CONTROL. Humming/Buzzing Noise From Under The Hood With The Key Off.
90043462022-09-26. Service bulletin. STRUCTURE:BODY:DOOR. MOLDING, Day light opening If the complaint for this part is coming loose or pulling away from the door please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair. Please take pictures of the part condition and an overall picture of the affected door/area and send them to FCA Redacted Content.
90043082022-09-26. Service bulletin. SEAT BELTS; VEHICLE SPEED CONTROL; SEATS. COVER, Tonneau If the tonneau retaining strap or hold down latch is broken, there are repair straps and latches available. It is not necessary to replace the full tonneau cover.
05001192022-09-15. Service bulletin. SERVICE BRAKES. Rear Brake Noise This bulletin involves replacing the rear caliper adapters, guide pins and brakepads. The customer may comment on the following:A high pitch ?squeal? originating from the rear brakes,often occurring in cold, humid weather and when driving in reverse, after the vehicle has been sitting for at least a few hours. Veryoften, the noise can be heard in the morning, when backing out of a driveway.
23032192022-09-15. Service bulletin. STRUCTURE:BODY:TAILGATE; STRUCTURE. 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.
21042192022-09-15. Service bulletin. 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 following:Harsh 3-2 downshift. Harsh 1-2 and 2-3 upshifts when cold. 4-5 shift clunk.
08114192022-09-15. Service bulletin. ELECTRICAL SYSTEM. Flash: Radio Frequency Hub Module (RF-HUB) Updates This bulletin involves reprogramming the RF-HUB with the latest software available. The customer may describe the following:Uconnect remote function inoperable when using the phone App
18089192022-09-15. Service bulletin. ENGINE AND ENGINE COOLING. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
90040052022-09-15. Service bulletin. PARKING BRAKE; BACK OVER PREVENTION. CAMERA (Rear) For concerns of back up camera flicker/blank/blue/black screen or camera inop, please ensure Radio is at latest software level. After update, system requires three sleep cycles to function properly. Please verify camera LVDS cable connection at camera and radio head unit. Also verify harness connection between chassis, body, and IP harness for bent pins or loose connection at XY400A, XY306A, XY552A. Please create and send a copy of the vehicle scan report and specify radio SW version and radio head unit ID to Bing Guo and Rafay Adil via email bingruo.guo@fcagroup.com (248) 500-7355 rafay.adil@fcagroup.com (248) 736-7059 Please call for any additional questions or assistance needed. If no response in 15 minutes, proceed with repair. Please be sure to attach a copy of the Vehicle Scan Report on the repair order.
S1818000024RevB2022-09-15. Service bulletin. FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM. Diesel Fuel Injector Cleaning Procedure
S21080002042022-09-15. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Lockup In The Software Installation Screen After Accepting FOTA Update (Incorrect "S2008000204" indicated on published document)
S21090000102022-09-15. Service bulletin. ENGINE. 3.0L Ecodiesel Engine Oil Information
S21080001992022-09-15. Service bulletin. AIR BAGS. Check Engine Light (CEL), Start Stop Disabled, Vehicle Goes Into Limp In Mode
S21080001982022-09-15. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Media Device Connection Guidelines For Bluetooth, Apple CarPlay, Android Auto Or USB To The Radio Head Unit
S1623000028RevE2022-09-15. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot
S21080001862022-09-15. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Power Windows Do Not Operate, Stop Start Inoperative
S21180000132022-09-15. Service bulletin. ENGINE AND ENGINE COOLING. Customer complaint may include the transmission going into neutral on its own. A Mil-on/check engine lamp-on condition may also be present. Upon further investigation, one or more of the following DTCs may be set in the powertrain control module (PCM): P219A-Bank 1 Air-Fuel Ratio Imbalance P219B-Bank 2 Air-Fuel Ratio Imbalance P2173-High Airflow/Vacuum Leak Detected (Slow Accumulation) P2172-High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) P0172-Fuel System 1/1 Rich P0175-Fuel System 2/1 Rich (Incorrect "July 2021" on document)
23-028-212022-08-22. Service bulletin. ENGINE AND ENGINE COOLING. Water Leak At CHMSL This bulletin involves replacing the Center High Mounted Stop Lamp (CHMSL) assembly. The customer may experience on one or more of the following:Water on the headliner. Water at the back of the cab. A leak from the third brake light/CHMSL.
04-001-212022-08-22. Service bulletin. ENGINE AND ENGINE COOLING. Pentastar Upgrade Oil Fill Level after an Oil Change This bulletin involves rechecking the oil fill level after filling the engine to the correct specifications. The customer may describe that after an oil change they check their oil fill level and it is showing overfilled on the oil dipstick.
08-138-212022-08-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; WHEELS; STEERING; BACK OVER PREVENTION. UAV and UCV Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to: 39.6.The repair procedure must be followed step by step. If the radio is not updated with the correct software level at the correct time the radio can be damaged. If the radio was damaged by not following the repairprocedure the radio may need to be replaced. Customers may experience one or more of the following: Lost radio presets. SXM favorite song not displaying/playing. Radio display screen is black, intermittent. Radio freeze intermittent. Incorrect navigation address/location/directions. Bluetooth pair or connection issue. Radio channel changes by itself. SXM icon inoperative. Backup camera has black display screen. High pitch chime noise. Contact list not loading. ?Device Not Supported? message. Remote app inoperative. Travel-Link fuel price incorrect. Backup camera gridlines missing. Unable to adjust volume. In addition the following enhancements are included: Heavy Duty (HD) Truck USB HUB improvements. HD Truck heated steering wheel improvements.
08-137-212022-08-22. Service bulletin. ELECTRICAL SYSTEM; SUSPENSION; STEERING. Flash: Electric Power Steering (EPS) Module Updates This bulletin involves updating the EPS module with the latest available software. Customers may experience the following: Vibration felt or noise heard when turning right at low speeds.
08-133-212022-08-22. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE. UAQ and UCQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to: 39.6.The repair procedure must be followed step by step. If the radio is not updated with the correct software level at the correct time the radio can be damaged. If the radio was damaged by not following the repairprocedure the radio may need to be replaced. Customers may experience one or more of the following: Lost radio presets. SXM favorite song not displaying/playing. Radio display screen is black, intermittent. Radio freeze intermittent. Incorrect navigation address/location/directions. Bluetooth pair or connection issue. Radio channel change by itself. SXM icon inoperative. Backup camera has black display screen. High pitch chime noise. Contact list not loading. Device not supported message. Remote app inoperative. Travel-Link fuel price incorrect. Backup camera gridlines missing. Unable to adjust volume. In addition the following enhancements are included: Heavy Duty (HD)Truck USB HUB improvements. HD Truck heated steering wheel improvements.

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