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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
S20180000012020-05-18. 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.
S20230000192020-05-18. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. Noise From Headliner Roof Area
S20080000252020-05-18. Service bulletin. VISIBILITY. Windshield Washer Spray Pattern Has Reduced Flow
S18230000292020-05-18. Service bulletin. EQUIPMENT. Water Leak Carpet Wet At Front And Or Rear Seats
S19080001092020-05-18. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Ambient Air Temperature Displayed Temperature Is Inaccurate
S20250000012020-05-18. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20080000042020-05-18. Service bulletin. STEERING; EQUIPMENT:ELECTRICAL. Left Side Steering Wheel EVIC And Radio Switches Are Inoperative
S20180000022020-05-18. Service bulletin. FUEL SYSTEM, GASOLINE. Malfunction Indicator Lamp (MIL) Illuminated. Fuel Injection Quantity Diagnostic Trouble Codes (DTCs) Set.
90042422020-05-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Tonneau Cover - Hard Folding For Replacement Parts and Service Information, please contact the tonneau cover manufacturer Fold-a-Cover at 1-800-322-0522.
90039502020-05-18. Service bulletin. PARKING BRAKE. Tailgate Cable 1. If replacing this cable for slack or loose on one side; first swap the cables left to right; does the issue follow the cable? a). If Yes, replace cable with slack. b). If No, a new shorter service cable PN 68488335A$ will resolve the issue if slack is greater than 18 mm of sag when compared to a straight edge from both ends of the cable. 2. If the issue improves following the left to right swap no further repair needed.
90040122020-05-18. Service bulletin. AIR BAGS; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); VEHICLE SPEED CONTROL; SEATS. Power Latch W/AJAR Prior to ordering this part for a customer stating the Tailgate will not auto release or Ajar light is on when the tailgate is closed, first try adjusting the tailgate strikers to minimize the force required to close. The striker must be centered up/down in the latch opening. You have to balance tailgate flushness and closing effort by moving the strikers fore or aft. Striker position also affects closing effort. In most cases moving the right side striker rearward or the left side forward fixes the issue and maintains flushness within tolerance. On the standard tailgate, the ajar switch is on the right side latch only. Please contact FCA Redacted Content for diagnostic assistance and information to assist in problem resolution. If no response in 15 minutes, proceed with repair.
90042382020-05-18. Service bulletin. VISIBILITY. Headlamp After performing the headlamp condensation clearing service procedure, If the headlamp is being replaced for a Moisture/Condensation issue, please e-mail and call FCA Redacted Content and send pictures of the Moisture/Condensation issue to FCA Redacted Content and FCA Redacted Content as part of the repair. If no response in 15 minutes, proceed with repair.
90042342020-05-18. Service bulletin. PARKING BRAKE; STRUCTURE. COVER, Front Seat Cushion For a seat cover that is loose at the seat frame attachment clips, please perform TSB 23-025-19 Seat cover replacement is not required
09-005-202020-04-27. Service bulletin. ENGINE AND ENGINE COOLING. 3.0L Oil Filter Cartridge Identification Differences And Oil Filter Element Servicing Procedure This bulletin outlines the correct procedure for changing an oil filter on a 3.0L diesel to prevent engine damage. The bulletin also highlights the design differences in the oil filter cartridges used in the GEN-2 and GEN-3 3.0L diesel. As well as potential issues that can arise should the incorrect filter be used in each application.
08-033-202020-04-27. Service bulletin. ENGINE. Intermittent No Crank No Start This bulletin involves inspecting the ground wire to engine block fastener and replacingif necessary. The customer may comment on the following:A no start and/or intermittent no start condition.
21-015-202020-04-27. 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:Bump/clunk felt during 1-2 or 2-3 upshifts. Delay/hesitation during a 3-2 shift. Bump or shutter felt during engine start/stop (ESS) situation.
08-028-202020-04-27. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Flash: Hybrid Control Processor (HCP) Updates This bulletin involves updating the HCP with the latest available software. Customers may experience the following:Bump or shutter felt during engine start/stop (ESS) situation. The following enhancement is also included in this software update:Improvements to engine start stop quality to eliminate bumps or shutter. Improvements to motor rotor temperature model for robustness.
18-020-202020-04-27. Service bulletin. POWER TRAIN; 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. Customer may experience one or more of the following:Hesitation upon Engine Stop Start (ESS) autostart. Hesitation upon light acceleration below 20 MPH. Hesitation when accelerating while warming up, with coolant temperature below 60 ºC (140 ºF).
W142020-04-27. Service bulletin. ENGINE. Customer Satisfaction Notification W14 Ground Bolt
D-19-20 Rev. B2020-04-27. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL. Fast Feedback Program - 3.0L Diesel Engine and Components - 2020 Ram 1500 (DT) and 2020 Jeep Wrangler (JL) - All Models (Rev. B)
S18080001472020-04-27. Service bulletin. EQUIPMENT:ELECTRICAL. Radio Does Not Save Sirius XM 360L Radio Presets
S18080001752020-04-27. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY; EXTERIOR LIGHTING. LED Front Fog Lamps Flicker Or Intermittently Light, Are Dim Or Inoperative. A U11E9, or B16FB-15 may be set
S19080002082020-04-27. Service bulletin. EQUIPMENT:ELECTRICAL. Satellite Radio Inoperative Radio Has Code B156B-13.
S20240000032020-04-27. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; BACK OVER PREVENTION. Customer Indicates A Whistle Noise From Dash During Certain Driving Parameters.
S20180000012020-04-27. Service bulletin. EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P26FB ? EGR Cooler Bypass Control Stuck Closed Bank 1 Set.

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