The timing cover can be removed with the engine in the vehicle, but it is very difficult, so it is recommended to remove the engine for this procedure. Begin by having the air conditioning system discharged by a professional. For 2.7L engines, the air conditioning compressor can be unbolted and moved aside without discharging the system, while for 3.5L and 3.7L engines, the system must be discharged and the compressor removed. Relieve the fuel system pressure, disconnect the negative battery terminal, loosen the right front wheel lug nuts, raise the vehicle securely on jackstands, and remove the wheel. Remove the engine cover pushpins and the cover if equipped, then take off the drivebelt and the drivebelt tensioner along with two idler pulleys from the timing cover. For 2.7L engines, drain the engine oil and remove the oil filter, then remove the coolant expansion tank. Next, remove the oil pressure control solenoid and the air conditioning compressor along with its mounting bracket, keeping track of the bolts. Remove the alternator and the crankshaft pulley, then for 2015 and later models, remove the radiator guide pins and support the cooling module with plastic cable ties. For 2.7L models, remove the oil pan, ensuring the front subframe and suspension are lowered and supported before reinstalling the subframe. Remove the water pump for 2.7L models and the power steering pump and reservoir for 2014 and earlier models, followed by the roll restrictor heat shield fasteners and shield. Disconnect any remaining wires, hoses, clamps, or brackets that may interfere with the timing cover removal, and for 2.7L models, remove the insulator mounting bolts and insulator from the timing cover. Gradually and evenly loosen the 21 timing cover bolts and remove the cover, using prying spots along the sides. Disconnect the Powertrain Control Module electrical connector and move the harness aside, then disconnect the Crankshaft Position sensor and remove the Camshaft Position sensors from the front of each cylinder head. Support the engine from above with a hoist or engine support fixture. For 3.5L and 3.7L models, place a floor jack with a block of wood under the oil pan and raise it slightly to support the engine. Remove the transaxle mount through bolt, the mount support brace, and the front engine mount. With the floor jack supporting the engine, lower it until the lower timing cover bolt above the crankshaft seal can be removed, then raise the engine approximately 4 inches to remove the two upper timing cover bolts. Loosen the remaining timing cover bolts gradually and evenly, starting with the oil pan-to-cover bolts, and remove the cover. Inspect and clean all sealing surfaces of the timing cover and the block, being careful not to gouge aluminum parts. Replace the crankshaft oil seal and any other necessary seals and O-rings before applying RTV sealant to the mating surfaces. Install the timing cover, ensuring it is positioned correctly, and reinstall the fasteners in their original locations, tightening them until the cover contacts the block and cylinder heads. Install the remaining bolts and tighten them in sequence to the specified torque, then reinstall the drivebelt and tensioner, followed by the crankshaft pulley. Connect the wiring harness connectors to the CMP and CKP sensors, reinstall the power steering pump and hoses, and finally, reinstall all remaining parts in reverse order of removal. Have the air conditioning system evacuated, recharged, and leak tested by the shop that discharged it.