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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

Only bulletins with component: Fuel system are shown. Show all

Bulletins, newest first
1050382025-05-20. Service bulletin. FUEL/PROPULSION SYSTEM. TUBE - FUEL INJECTOR SUPPLY & GASKET - NONE
1050392025-05-16. Service bulletin. FUEL/PROPULSION SYSTEM. TUBE - FUEL INJECTOR SUPPLY & GASKET - NONE
1035242025-05-02. Service bulletin. FUEL/PROPULSION SYSTEM. TANK - FUEL
91004702025-01-21. Service bulletin. FUEL/PROPULSION SYSTEM. FUEL VAPOR CANISTER FILTER EVAP Fuel Filters are to be checked for restriction / blockage on a regular schedule. If the Filter is restricted or blocked then replace the part.
18053202023-01-09. Service bulletin. POWER TRAIN; EXTERIOR LIGHTING; AIR BAGS; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. 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 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 softwareupdate.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 Cluster displays "Autopark Engaged" even when autopark is no longer active.
18048222023-01-09. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING; SEATS. 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 DTCs: P0300 - Multiple Cylinder Misfire.If DTC P0300 is present either alone or along with other DTCs listed within thisbulletin the right intake camshaft MUST be replaced along with this software update (only if DTC P0300 is present). Refer to the detailedservice procedures available in DealerConnect>Service Library under: Service Info>09 - Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation>Right. If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur.If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 - EVAP Purge System Performance. 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.
14001202022-10-17. Service bulletin. BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING. 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 followingDiagnostic 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.
90043762022-10-17. Service bulletin. FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. PUMP, Vacuum Prior to replacing the vacuum pumps, please contact or email FCA Redacted Content. If no response in 15 minutes, proceed with repair.
18048222022-10-17. Service bulletin. AIR BAGS; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; SEATS; EXTERIOR LIGHTING. 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 DTCs: P0300 - Multiple Cylinder Misfire.If DTC P0300 is present either alone or along with other DTCs listed within thisbulletin the right intake camshaft MUST be replaced along with this software update (only if DTC P0300 is present). Refer to the detailedservice procedures available in DealerConnect>Service Library under: Service Info>09 - Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation>Right. If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur.If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 - EVAP Purge System Performance. 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.
18053202022-09-26. Service bulletin. EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); AIR BAGS; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. 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 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 softwareupdate.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.
18048222022-09-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. 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 DTCs: P0300 - Multiple Cylinder Misfire.If DTC P0300 is present either alone or along with other DTCs listed within thisbulletin the right intake camshaft MUST be replaced along with this software update (only if DTC P0300 is present). Refer to the detailedservice procedures available in DealerConnect>Service Library under: Service Info>09 - Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation>Right. If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur.If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 - EVAP Purge System Performance. 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.
18-048-222022-06-27. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. 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 DTCs: P0300 - Multiple Cylinder Misfire. If DTC P0300 is present either alone or along with other DTCs listed within thisbulletin the right intake camshaft MUST be replaced along with this software update (only if DTC P0300 is present). Refer to the detailedservice procedures available in DealerConnect>Service Library under: Service Info>09 - Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation>Right.If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur. If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 - EVAP Purge System Performance. 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: Pinging/detonation sound from the engine after warm up at 1000-1500 RPM at low speed. 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.
18048222022-05-31. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; SEATS; ENGINE. 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 DTCs: P0300 - Multiple Cylinder Misfire.If DTC P0300 is present either alone or along with other DTCs listed within this bulletin the right intake camshaft MUST be replaced along with this software update (only if DTC P0300 is present). Refer to the detailedservice procedures available in DealerConnect>Service Library under: Service Info>09 - Engine, 3.6L / Cylinder Head / Camshaft, Engine / Removal and Installation>Right. If just the software flash was done without the right intake camshaft being replacedthe DTC P0300 may reoccur.If DTC P0300 is not present but other DTCs on this list below are present, performjust the software update. P0441 - EVAP Purge System Performance. 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.
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.
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.
S19250000082020-06-22. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
18-039-202020-05-26. Service bulletin. FUEL SYSTEM, GASOLINE. Possible Driveability Issues due to the Winter-Blend Fuel into the Warmer Season
18-089-192019-12-16. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
90041502019-12-02. Service bulletin. FUEL SYSTEM, GASOLINE; POWER TRAIN. SEAL, Input If looking to replace stubshaft due to ATX fluid leaking, do not replace PTU seals. None of the seals from the PTU side will need to be replaced whenever the ATX stubshaft is replaced, even though V-seal (68408748A$) is in direct contact with the stubshaft, it will not avoid grease/oil leakage from transmission side. PTU V-seals are intended to act as a dust cover for stubshaft - PTU input shaft spline interface. PTU Input shaft seal (68408749A$) is intended to hold PTU oil and debris ingress; it should be replaced only if the fluid leakage is confirmed to be PTU oil and not ATX trans. fluid.

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