Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
Here are the instructions with some pictures, thanks
REMOVAL WARNING: Do not loosen radiator draincock with system hot and pressurized. serious burns from coolant can occur. Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse.If thermostat is being replaced, be sure that replacement is specified thermostat for vehicle model and engine type.Factory installed thermostat housings on 3.9L/ 5.2L/5.9L engines are installed on a gasket with an anti-stick coating. This will aid in gasket removal and clean-up.
Air Conditioned vehicles: Remove support bracket (generator mounting bracket-to-intake manifold) located near rear of generator. 4) On air conditioning equipped vehicles, the generator must be partially removed.
WARNING: Constant tension hose clamps are used on most cooling system hoses. when removing or installing, use only tools designed for servicing this type of clamp, such as special clamp tool (number 6094). snap-on clamp tool (number HPC-20) may be used for larger clamps. always wear safety glasses when servicing constant tension clamps.
CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with matching number or letter.
CAUTION: When installing the serpentine accessory drive belt, the belt must be routed correctly. If not, engine may overheat due to water pump rotating in wrong direction. The correct belt with correct length must be used.