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Service bulletins for the 2021 Jeep Grand Cherokee

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.

1325 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
S21240000102022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. Blower Motor Noisy When Running System On Max. Blower Changes Speeds Without Customer Input.
S21180000092022-10-17. 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.
S18090000072022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. Customer Complaint May Include Engine Oil Leak Or Consumption
09007212022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. 6.2L Engine Oil Temperature Sensor Leak This bulletin involves re-torquing the oil temperature sensor to specification. Customers may notice a slight oil leak from under the vehicle near the oil temperature sensor location
S2123000035RevA2022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. B1F2A-77, B1F29-77, B1F28-77, B1F2B-77 3rd Row Seat Recline Motor DTC ?s
S21240000102022-10-17. Service bulletin. ENGINE AND ENGINE COOLING. Blower Motor Noisy When Running System On Max. Blower Changes Speeds Without Customer Input.
S21180000092022-10-17. 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.
S21080001232022-10-17. Service bulletin. ENGINE. Stored U0080-00 DTC Code Ethernet Bus 1 Fault Set By SGW
S18090000072022-10-17. Service bulletin. ENGINE. Customer Complaint May Include Engine Oil Leak Or Consumption
0804322REVB2022-10-17. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; VEHICLE SPEED CONTROL. Flash: Heating Ventilation and Air Conditioning (HVAC) Updates This bulletin involves reprogramming the HVAC module with the latest available software. Customers may experience the following:High pitch whistle coming from the dash when the blower motor is turned on.High pitch whistle originated from the defroster door when the HVAC unit in either Hi-Level (panel and defrost) or Bi-Level (panel and floor) modes. May be worsened when running the front airflow at blower bar 1-2 and rear airflow at blower bar 5-7
S22240000032022-10-17. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ENGINE AND ENGINE COOLING. AC Does Not Blow Cold (Rev. A not indicated on final document)
S22090000022022-10-17. Service bulletin. ENGINE. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. When performing diagnosis, an internal engine concern may be suspected.
S2109000007-12022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Complaint may include low engine oil level and/or engine oil seep leak from engine oil drain plug.
S21090000082022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION: OIL COOLER. Oil Level Check Procedure
S21090000072022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Complaint may include low engine oil level and/or engine oil seep leak from engine oil drain plug.
S21090000052022-09-26. Service bulletin. ENGINE. Issue is engine cover not installed from the factory.
S21090000042022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. Issue involves overheating, running hot, coolant leaks and related symptoms after a Mopar replacement engine has been installed in the vehicle.
90043902022-09-26. Service bulletin. ENGINE; EQUIPMENT. COVER, Engine For WL equipped with 3.6L engines, the Limited and Laredo trim lines are not equipped from the factory with an engine cover. Overland and Summit are equipped from the factory with an engine cover. Engine cover installation is not reimbursable on a shortage and error claim on Limited and Laredo trim levels.
90045272022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. Valve Cover Gasket It is advised to replace the full valve cover assembly if you are experiencing a valve cover leak Engineering has updated the skirt height of the valve cover to address oil leaks. Replace the valve cover (part # 04893800AI (right side) or 04893799AH (left side)includes valve cover gasket) to ensure proper repair. Please call FCA Redacted Content to facilitate fast track shipment of failed part.
S2008000023RevA2022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. No Crank No Start, Click No Start
S1809000007RevC2022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. Customer Complaint May Include Engine Oil Leak Or Consumption
90043632022-09-26. Service bulletin. ENGINE AND ENGINE COOLING; WHEELS. MOTOR, Blower with Wheel Blower motor making noise. Upon removing blower motor, inspect HVAC case for damage in the blower wheel area. Please call FCA Redacted Content to report findings. If no response in 15 minutes, proceed with repair.
S21080000842022-09-26. Service bulletin. ENGINE AND ENGINE COOLING. CEL (Check Engine Lamp) On, DTC P0197 Engine Oil Temperature Low
0804322REVB2022-09-26. Service bulletin. VEHICLE SPEED CONTROL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Flash: Heating Ventilation and Air Conditioning (HVAC) Updates This bulletin involves reprogramming the HVAC module with the latest available software. Customers may experience the following:High pitch whistle coming from the dash when the blower motor is turned on.High pitch whistle originated from the defroster door when the HVAC unit in either Hi-Level (panel and defrost) or Bi-Level (panel and floor) modes. May be worsened when running the front airflow at blower bar 1-2 and rear airflow at blower bar 5-7
TSB0804322RevB2022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:SOLENOID/ACTUATOR. AC Does Not Blow Cold

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