Disconnect the negative battery cable from the battery and drain the cooling system, saving the coolant if it is in good condition. Loosen the hose clamps securing the inlet and outlet hoses to the radiator, then detach the hoses; if they are stuck, use water pump pliers to twist and break the seal, being careful not to distort the fittings. Disconnect the coolant reservoir hose from the radiator filler neck. For older models, remove the screws attaching the shroud to the radiator and slide it toward the engine, while for later models, remove the four push fasteners and lift the shroud back over the fan. If the vehicle has an automatic transmission, disconnect the cooler lines from the radiator, using a drip pan to catch any spilled fluid, and plug the lines and fittings. Remove the radiator mounting bolts, carefully lift out the radiator without spilling coolant or scratching the paint, and inspect it for leaks and damage, seeking professional repair if necessary. Clean the radiator with compressed air and a soft brush, avoiding bending the cooling fins, and inspect the rubber insulators for deterioration. Installation follows the reverse order of removal, ensuring the radiator mounting pins are seated in the rubber insulators. After installation, fill the cooling system with the appropriate antifreeze and water mixture, start the engine to check for leaks, and allow it to reach normal operating temperature, rechecking the coolant level and adding more if needed. For vehicles with automatic transmissions, check and add fluid as necessary.