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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
S20230000502021-03-01. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. Secondary Seal To Address DT Dual Pane Sunroof Water Leaks Through Car Washes
S20230000492021-03-01. Service bulletin. VISIBILITY; EQUIPMENT; ELECTRICAL SYSTEM. Driver And/Or Passenger Exterior Mirror Glass Intermittently Does Not Return To Original Position From Tilt Down Or Appears Stuck In Down Position
S20230000482021-03-01. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES; STRUCTURE. Left Rambox Lid Unlatches By Itself
S2024000007 Rev.2021-03-01. Service bulletin. STRUCTURE:INTERIOR PANELS:DASHBOARD; EQUIPMENT ADAPTIVE/MOBILITY. Customer Indicates There Is A Whistle Noise After The Vehicle Is Turned Off.
S2008000182 Rev.2021-03-01. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY. Driver Or Passenger Power Windows Do Not Go Up Or Down
S20080001922021-03-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); ELECTRICAL SYSTEM. Check Engine Light (CEL) On, Electronic Stability Control (ESC) Indicator Light Illuminated, DTC?s C0042-28, P057B
S20230000442021-03-01. Service bulletin. EQUIPMENT. Valet Key Will Not Stay Locked In Fob
90043372021-03-01. Service bulletin. STRUCTURE:BODY:DOOR:HANDLE:EXTERIOR; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; BACK OVER PREVENTION; STRUCTURE:BODY:TAILGATE. HANDLE, Tailgate For issues related to tailgate handle camera do not replace tailgate handle, the camera is serviceable and can be ordered through MOPAR separately as follows: 2019 - 68144068A$ 2020 - 68414414A$, 68144068A$ 2021 - 04672850A$
90043342021-03-01. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Power Window Regulator or Motor Owners may complain that the Driver and or Passenger Windows are inoperative. Technician may find DTC?s B18BA-12 - Window Control - Circuit Short to Battery, B18BA-13 - Window Control - Circuit Open (stored or active). Replace the DDM or PDM per detailed repair information in Service Library or reference Star Online Publlication S2008000182. Replacing regulators or motors will not correct this issue.
23-006-212021-02-16. Service bulletin. 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.
08-015-212021-02-16. Service bulletin. ELECTRICAL SYSTEM. Radio Enhancements This bulletin involves updating the radio software level to 1848.34. Customers may experience one or more of the following:Radio display screen flickers. Radio resets with RPM less than 1000 RPM (DT and JL with 3.0L Diesel). Clock loses 6 seconds per day (JL with 5 inch screen). Ghost Touch, features, modes and App?s changing without drivers input. Bluetooth pop noise. Pop message ?SXM Wait? displayed for extended period of time. The radio resets.
08-014-212021-02-16. Service bulletin. AIR BAGS; EXTERIOR LIGHTING; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING. Motor Generator Unit (MGU) Connector Not Fully Seated This bulletin involves replacing the MGU. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following Diagnostic Trouble Codes (DTCs). U0594 - Implausible Data Received From HCP. P1B03-00 - Resolver Signal / MCPA Rationality. P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. P0607-00 - ECU Internal Performance. P1C64-00 - Hybrid Perf - Engine Speed Below Target During Autostart. P0A92-00 - Hybrid Generator Performance. Customers may also experience the following: The vehicle has 15-40 minutes of driving time before a vehicle stall.The vehicle will be unable to re-start. The vehicle will lose charging of the main 12V battery. A check engine light and/or a low battery light illuminates.
05-001-212021-02-16. Service bulletin. AIR BAGS. Front Brake (Chirp/Squeak) Noise This bulletin involves applying grease to the anti-rattle clips on both sides ofthe front brakes. The customer may comment on the following: A chirp and/or squeak from front of vehicle over bumps when the brakesare not applied.
S2023000005 Rev.2021-02-16. Service bulletin. VISIBILITY. Water Leak On Sliding Rear Window Or Back Of Cab
S1808000282 Rev.2021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. CEL, Check Engine Lamp On, Idles Rough Or Drivability Concerns
S2108000025 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM. CEL Check Engine Lamp On, DTC P0158 O2 Sensor 2/2 Circuit High
S21080000252021-02-16. Service bulletin. ELECTRICAL SYSTEM. CEL Check Engine Lamp On, DTC P0158 O2 Sensor 2/2 Circuit High
S1923000042 Rev.2021-02-16. Service bulletin. SUSPENSION. Service Air Suspension System And Power Side Steps Obstructed message With Chime When Power Side Steps Are Obstructed
S21080000222021-02-16. Service bulletin. ELECTRICAL SYSTEM. Service Trailer Brake Warning Message Displayed On The Cluster
S2018000001 Rev.2021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P26FB ? EGR Cooler Bypass Control Stuck Closed Bank 1 Set.
S2025000005 Rev.2021-02-16. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set
S21250000012021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. High Pressure (HP) Exhaust Gas Recirculation (EGR) Cooler, Perceived Internal Coolant Leak.
S2023000019 Rev.2021-02-16. Service bulletin. STRUCTURE. Noise From Headliner Roof Area
S21090000012021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. Customer may complain of a MIL lamp on. Upon further investigation there could be a fault code in the PCM for P1524 ? Oil Pressure Out of Range ? Camshaft Advance/Retard Disabled.
S1709000010 Rev.2021-02-16. Service bulletin. ENGINE AND ENGINE COOLING. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary.

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