A: Disconnect the negative battery terminal, set the parking brake, and raise the vehicle. Remove the splash shield, drain the cooling system, and remove the Coolant Reservoir. Disconnect the fan electrical connectors and the upper Radiator hose. Unbolt the cooling fan assembly and remove the fan shroud assembly. Detach the fan from the motor by removing the C-clip and the mounting screws. Install a new 0-ring, lightly coated with coolant. Reconnect the battery, remove the battery tray, and disconnect the fan motor's electrical connector. Remove the fan shroud assembly. Installation is the reverse of removal, and refill the cooling system.