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Service bulletins for the 2021 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.

700 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
04-001-212022-08-22. Service bulletin. ENGINE AND ENGINE COOLING. Pentastar Upgrade Oil Fill Level after an Oil Change This bulletin involves rechecking the oil fill level after filling the engine to the correct specifications. The customer may describe that after an oil change they check their oil fill level and it is showing overfilled on the oil dipstick.
S18180000242022-08-22. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Diesel Fuel Injector Cleaning Procedure
S21090000102022-08-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION: OIL COOLER. 3.0L Ecodiesel Engine Oil Information
S19180000082022-08-22. Service bulletin. ENGINE AND ENGINE COOLING. Customer?s complaint may include a MIL-on with one or more of the following DTCs (Active, Pending, or Stored) in the PCM: P0133, P0137, P0171, P0300, P2096. The root cause could be due to oil leaking from Bank 1 valve cover seal on to the 1/2 (Bank 1 downstream) O2 sensor. This can adversely affect the 1/2 O2 sensor signal reading and lead to listed DTCs. Before performing normal diagnostic routines for the above codes, check for the condition listed above.
S21250000012022-07-18. Service bulletin. FUEL SYSTEM, GASOLINE; SERVICE BRAKES; ENGINE AND ENGINE COOLING. High Pressure (HP) Exhaust Gas Recirculation (EGR) Cooler, Perceived Internal Coolant Leak.
S21080000142022-07-18. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:WIRING; EQUIPMENT; POWER TRAIN. Check Engine Light On, Service Shifter Message, No Crank No Start. Transmission Wiring Harness Chaffed Or Pinched Near Exhaust DPF
S19250000082022-06-27. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.
90045272022-06-27. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. Valve Cover Gasket If you are experiencing a right valve cover leak and plan on replacing only the gasket, the customer may later return for an oil leak. Engineering has updated the skirt height of the valve cover to address oil leaks. Replace the valve cover (part # 04893800AI includes valve cover gasket) to ensure proper repair. Please call FCA Redacted Content if further questions or help is needed with parts retention returns on valve cover assemblies
S18090000072022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Customer Complaint May Include Engine Oil Leak Or Consumption
754902022-05-31. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. CAMSHAFT - INTAKE
752672022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; ENGINE AND ENGINE COOLING:COOLING SYSTEM. TUBE - TURBO WATER FEED
752272022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING. MUFFLER AND TAILPIPE ? EXHAUST
1804222 REVA2022-05-31. Service bulletin. ENGINE; POWER TRAIN; ELECTRICAL SYSTEM; 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 the following DTC: P0300 - Multiple Cylinder Misfire. In addition, customers may experience the following concern: Spark knock/detonation sound from the engine at idle.
Emissions Recall2022-05-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emissions Recall Y81 Diesel Exhaust Fluid Inducement
S22080000852022-05-31. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. No Start, ABS Module Has No Communication, Stop/Start Inoperative
S2108000137 RevA2022-05-31. Service bulletin. ELECTRICAL SYSTEM; TRACTION CONTROL SYSTEM; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; ENGINE AND ENGINE COOLING. (CEL) Check Engine Lamp, (ABS) Anti-Lock Brake System, And (TCS) Traction Control System Lamps On
S22180000072022-05-31. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. The customer?s complaint may include a MIL or check engine lamp-on condition. The customer may also complain of a lack of power (vehicle potentially in limp-mode). Upon further investigation, a fault code for P2100 - ELECTRONIC THROTTLE CONTROL MOTOR CIRCUIT along with other fault codes may be set in the PCM.
S22080000752022-05-31. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. Check Engine Light Is On, No Start. DTC?s P00FD, P0562, P26F3
S2109000005 Rev.2021-12-13. Service bulletin. ENGINE AND ENGINE COOLING. Issue is engine cover not installed from the factory.
90044472021-12-13. Service bulletin. ENGINE AND ENGINE COOLING. COVER, Engine 2021 JL / JT Engine Cover Removal - Dealer notification for removal of cover. Please note that the Aesthetic Engine Cover (05281562AC) has been removed on ALL JL/JT 3.6L Vehicle Configurations. Please note that a lack of engine cover matches engineering release. The engine cover will no longer be included on any 3.6L models of the JL/JT. Additionally, please note that it is OK to proceed to vehicle sale with the related front and rear engine cover brackets (05281948AB, 05281949AB) is OK. Brackets are not required to be removed prior to vehicle sale and will be removed from future vehicle builds. Please note that any dealer attempt to add an engine cover, or remove related bracketry, will be subject to dealer charge back for the associated costs.
S21180000092021-06-28. Service bulletin. ENGINE AND ENGINE COOLING. Customer complains of a MIL-on condition. Upon further inspection, there is a Diagnostic Trouble Code (DTC) P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) set in the PCM.
S21230000202021-05-24. Service bulletin. BACK OVER PREVENTION; ENGINE AND ENGINE COOLING. A Buzz, Squeak, Rattle (BSR), Clicking Noise Heard From Left Side Of The Freedom Top.
90041042021-05-24. Service bulletin. ENGINE AND ENGINE COOLING. Valve Cover & Gasket Engineering is looking for information on the Pentastar valve cover due to gasket oil leaks. Please review the valve cover for a white paint dot/mark directly between the 2 cam actuators on the front of the valve cover. If found, please contact the following engineers for further information FCA Redacted Content, or FCA Redacted Content If no response in 15 minutes, proceed with repair.
S1809000007 Rev.2021-04-26. Service bulletin. ENGINE AND ENGINE COOLING. Customer complaint may include engine oil leak/consumption.
90033572021-04-26. Service bulletin. ENGINE AND ENGINE COOLING. ADAPTER, Engine Oil Filter (Pentastar V6) All vehicles equipped with a 3.2L or 3.6L except for model year 2014 vehicles with leak concern: 1) Ensure the Oil Filter Adapter (OFA) Cap O-ring is seated in the proper groove in the cap and not damaged or cut. 2) If replacing the (OFA) due to a leak detected between (OFA) and block. Ensure the torque on the 5 bolts are torqued to 12nm. If not record the actual values, torque to 12nm and contact the FCA employees listed below. 3) Remove the (OFA) and replace the O-ring and gaskets only (Kit #68191356A$), NOT THE OFA. 4) If oil was drained, add oil dye to ensure the leak is repaired. For model year 2014 vehicles replace the Oil Filter Adaptor. 5) When replacing PN's 68310865A$ & 68308741A$, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.

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