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Service bulletins for the 2020 Jeep Gladiator

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.

684 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
S1908000102 Rev.2020-12-21. Service bulletin. EQUIPMENT:ELECTRICAL:AUX AUDIO JACK/PLUG. (Rev. A) Audio Mute On All Sources Except AM
S20230000412020-12-21. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; EQUIPMENT. MOPAR Trailer Brake Accessory Kit And Instructions
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.
90043312020-12-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. Mopar Trailer Brake Controller Disregard ADH sales code reference in I-sheet. Optional harness 82216416A$ referenced in I-sheet is used for Wrangler only without factory trailer tow.
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.
08-074-20 REV. C2020-11-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; STEERING. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all step necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excess play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
14-001-202020-11-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, GASOLINE; EQUIPMENT. Fuel Tank Replacement - P0461: Level Sensor Performance This bulletin involves diagnosis and if necessary replacing the fuel tank and O-ringdue to a P0461 Diagnostic Trouble Code (DTC). Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P0461 - Fuel Level Sensor 1 Performance. In addition, the customer may notice one or more of the following:The fuel gauge is not accurate. The fuel gauge is stuck.
S20080001612020-11-30. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Satellite Radio Not Working
S20080001582020-11-30. Service bulletin. EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. Check Engine Light (CEL), No Crank, Cluster Shows Not In Park (Vehicle Still Able To Obtain Park) Due To Terminal Push Out (TPO) Of The XY230A Inline Connector
S1908000214 Rev.2020-11-30. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI. Bluetooth Speaker External Charger
90043072020-11-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TRANSMITTER, Integrated Key FOB For concern of keyfob inoperative, please contact FCA Redacted Content prior to replacing/servicing keyfob. If no response within 15 minutes, proceed with repair. Engineering is investigating to determine root cause as warranty return keyfobs are determined trouble not found.
90043092020-11-30. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; STEERING. GEAR, Power Steering When installing this gear refer to published service information. The power steering pump software must be updated, and vehicle configuration updated to ensure proper steering feel.
18-053-20 REV. B2020-10-26. 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. 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).P0300 - Multiple Cylinder Misfire. P258B - Electronic Vacuum Pump Performance. C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. P1404 - EGR Close Position Performance. P1206 - Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will nowbe P025A - Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following: The Anti-Lock Brake System (ABS) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafespeed(MTX Only). Cluster displays "Autopark Engaged" even when autopark is no longer active.
08-074-20 REV. B2020-10-26. Service bulletin. STEERING. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, if required. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excess play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
08-074-20 REV. A2020-10-26. Service bulletin. STEERING. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, if required. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excess play.This Technical Service Bulletin (TSB) repair will NOT correct a sustain steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
08-080-202020-10-26. Service bulletin. EQUIPMENT. UAQ and UCQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to 34.2. Customers may experience one or more of the following:Radio screen goes black. Voice Recognition (VR) call contact name not recognized. In addition, the following software enhancements are also available:Bluetooth improvements. Navigation improvements.
684272020-10-26. Service bulletin. STEERING. D-20-12 Service Bulletin 08-074-20 - Jeep Wrangler (JL) and Jeep Gladiator (JT) - Improved Steering Feel
S1921000007 Rev.2020-10-26. Service bulletin. ENGINE AND ENGINE COOLING. (Revision A) Engine Restarting On Stop/Start Event Without Releasing The Brake Pedal, EVIC Displays Shift To P Then Desired Gear, D on PRNDL Flashing
S1821000006 Rev.2020-10-26. Service bulletin. TIRES. (Revision A) Oversized Tire Calibration For Customized Jeep Wrangler, Gladiator, 2019 Ram Heavy Duty DJ, MVP Update Required, MVP Hotline
S20080001462020-10-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AC Does Not Blow Cold
S20080001412020-10-26. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Navigation Shows Incorrect Location
S20080001362020-10-26. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. Passenger Air Bag Disable Lamp On Flashing When PADL Switch Is Connected
90043032020-10-26. Service bulletin. STRUCTURE:BODY:TAILGATE; STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS. CONTROL UNIT, Door (Tailgate) Prior to ordering this part, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
90042852020-10-26. Service bulletin. SEATS; EQUIPMENT. Rear Seat Structure and Seat Kit Part Numbers For concern of folding seat back compartment cover will not lock. Please contact FCA Redacted Content prior to repair. If no response within 15 minutes, proceed with repair.
18-053-20 REV. A2020-09-28. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 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 one or more of the following DTCs.P0300 - Multiple Cylinder Misfire. P258B - Electronic Vacuum Pump Performance. C1252-92 - Vacuum Pump Control Circuit - Performance Or Incorrect Operation. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. P1404 - EGR Close Position Performance. P1206 - Fuel Pump Control Module Open Circuit To Fuel Pump. Upon diagnosing the vehicle the technician may find DTC P1206 set before flashing the vehicle, the correct DTC will now be P025A - Fuel Pump Module Control Circuit Open after the software update.In addition the customer may notice one or more of the following:The Anti-Lock Brake System (ABS) light illuminates. The customer may notice an ability to shift into 1st gear at an unsafe speed(MTX Only). Cluster displays "Autopark Engaged" even when autopark is no longer active.

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