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Service bulletins for the 2020 Jeep Wrangler

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.

1020 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
S25090000012025-02-22. Service bulletin. ENGINE. Engine Rattle Noise
91004982025-02-12. Service bulletin. ENGINE. "3.6L PSU Long Block Misfire DTC codes and/or rough idle and/or valvetrain noise. These conditions may be related to worn intake camshaft high lift lobe(s), and intake rocker arm(s) high lift slider. High mileage failure (10,000-60,000 miles). 1. Remove the valve cover(s) per the released service procedures. The use of a stethoscope or DTC specific cylinder misfire codes can help to locate the condition to the left or right bank. 2. Once it has been visually confirmed that there is wear on the high lift intake lobe(s) & rocker arm(s) slider, there is a special service kit for this type of repair which should be used, instead of replacing the complete engine/long block. This kit contains the parts required for the repair (intake cam, rocker arms, sealer and gaskets)."
1029342025-02-05. Service bulletin. ENGINE. THROTTLE BODY
9100363 Rev12024-12-19. Service bulletin. ENGINE. Turbocharger Kit Please note many parts of the Turbo Assembly can be serviced separately and complete turbo replacement may not be necessary. If the Turbo is being replaced for a noise or a rattle, inspect the wastegate for binding. The actuator kit is serviced separately. If the turbo is being replaced for an oil leak concern, please inspect the area around the turbo oil feed oring for a leak. The o-ring is serviced separately
1011402024-10-18. Service bulletin. ENGINE. FCA Caribbean Warranty Bulletin ID-23-03 Rev. G 2018 - 2024 Jeep Wrangler (JL) and 2020 - 2024 (Current) Jeep Gladiator (JT) - Corrosion Warranty Claim Simplification
1011372024-10-18. Warranty extension. ENGINE. Warranty Bulletin D-23-04 Rev. F 2018 - 2024 Jeep Wrangler (JL) and 2020 - 2024 Jeep Gladiator (JT) - Corrosion Warranty Claim Simplification
1008762024-10-08. Warranty extension. STRUCTURE:BODY; ENGINE. FCA Caribbean Warranty Bulletin ID-23-03 Rev. F 2018 - 2024 (Current) Jeep Wrangler (JL) and 2020 - 2024 (Current) Jeep Gladiator (JT) - Corrosion Warranty Claim Simplification
1008752024-10-03. Warranty extension. ENGINE; STRUCTURE:BODY. Warranty Bulletin D-23--04 2018 - 2024 (Current) Jeep Wrangler (JL) and 2020 - 2024 (Current) Jeep Gladiator (JT) - Corrosion Warranty Claim Simplification
1001642024-09-03. Other. ENGINE. PUMP – WATER & CONNECTOR - OIL COOLER TUBE
S1408000384 REV.F2024-07-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE. "Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On "
989332024-06-26. Other. ENGINE. PUMP – WATER & CONNECTOR - OIL COOLER TUBE
989312024-06-26. Other. ENGINE. PUMP – WATER & CONNECTOR - OIL COOLER TUBE
S2307000002 REV.B2024-06-11. Service bulletin. ENGINE. Suspected Engine Coolant Leak
S2307000002 REV.A2024-06-07. Service bulletin. ENGINE. Suspected Engine Coolant Leak
91003372024-05-17. Service bulletin. ENGINE. "PUMP WATER For 2016-2024MY 3.6L Pentastar Upgrade with suspected coolant leak. PRIOR TO PERFORMING ANY WATER PUMP REPLACEMENT, PROCEED WITH INSPECTION INSTRUCTIONS FROM THE LATEST VERSION OF STAR ONLINE PUBLICATION S2307000002. Please submit pictures of the leak area thru the DIDI process outlined in the STAR Online document. NOTE: Some coolant residue may be found at the water pump weep hole plug area which may be normal, but coolant should not be dripping from this location. If unsure about, use the Pressurized Coolant System Inspection process as found in the Dealer Connect Cooling Diagnosis and Testing Procedures."
S23090000062024-01-08. Service bulletin. ENGINE AND ENGINE COOLING. Engine oil leak
91002122024-01-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. PUMP Water For 2016-2024MY 3.6L Pentastar Upgrade with suspected coolant leak. PRIOR TO PERFORMING ANY WATER PUMP REPLACEMENT, PROCEED WITH INSPECTION INSTRUCTIONS FROM THE LATEST VERSION OF STAR ONLINE PUBLICATION S2307000002. Please submit pictures of the leak area thru the DIDI process outlined in the STAR Online document. NOTE: Some coolant residue may be found at the water pump weep hole plug area which may be normal, but coolant should not be dripping from this location. If unsure about, use the Pressurized Coolant System Inspection process as found in the Dealer Connect Cooling Diagnosis and Testing Procedures.
S23070000012024-01-02. Service bulletin. ENGINE AND ENGINE COOLING. Customer complaint may include a coolant leak, or, a coolant leak is detected during a routine oil change inspection.
9003357A2024-01-02. Service bulletin. ENGINE AND ENGINE COOLING. ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use red O-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
S23090000062023-10-30. Service bulletin. ENGINE AND ENGINE COOLING. Engine oil leak
91002122023-10-30. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP. PUMP Water For 2016-2024MY 3.6L Pentastar Upgrade with suspected coolant leak. PRIOR TO PERFORMING ANY WATER PUMP REPLACEMENT, PROCEED WITH INSPECTION INSTRUCTIONS FROM THE LATEST VERSION OF STAR ONLINE PUBLICATION S2307000002. Please submit pictures of the leak area thru the DIDI process outlined in the STAR Online document. NOTE: Some coolant residue may be found at the water pump weep hole plug area which may be normal, but coolant should not be dripping from this location. If unsure about, use the Pressurized Coolant System Inspection process as found in the Dealer Connect Cooling Diagnosis and Testing Procedures.
S23070000022023-10-02. Service bulletin. ENGINE AND ENGINE COOLING. Suspected engine coolant leak.
S23250000062023-08-21. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer complaint may include a MIL-on or check engine lamp on condition.
S23090000022023-07-31. Service bulletin. ENGINE AND ENGINE COOLING. MIL lamp-on. Engine noise, rattle. Misfire or rough running.
07007232023-07-31. Service bulletin. ENGINE AND ENGINE COOLING. Water Quality When Mixed With Engine Coolant

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