Total time, about an hour. On the OS someone claimed to have done it in 30 minutes, but it took me about an hour from getting everything out to having everything packed away. Make sure the engine is COMPLETELY cool before doing this. Best bet is to do it first thing in the morning. Remove the radiator cap and upper radiator hose. Make sure you have a catch pan under the truck to collect the antifreeze. You don't need to drain the radiator unless you are doing a flush and fill at the same time. There's a variety of methods people use to loosen the fan clutch, but I will say you don't need a special tool. A 2' length of chain, M8 x 1.25 bolt, a quick link and 36mm open end wrench will work. Take out one 13mm bolt from the water pump pulley and attach the chain to the pulley using the M8 bolt. Attach the other end of the chain to the engine lift bracket and using a 36mm open end wrench, loosen the fan clutch nut. Once you have it loosened, remove the 10mm bolts from the top of the radiator shroud and the fan electrical connector (just a bit to the right and below the shroud bolt). Remove the AC lines from the clips on the radiator shroud on the left side. Remove the fan clutch nut from the water pump. You'll be able to move the fan a bit to clear the shaft. Pull the radiator shroud and fan assembly out in one piece. You can move the shroud forward on the left side to clear the radiator neck. Be careful not to smack the radiator with the shroud as you'll damage the fins. Obviously, if you're just replacing your fan clutch, this is where you'd stop and do what you need to replace that...but, that's not what I'm doing here, so, onward. Remove your serpentine belt completely. You can now undo the remaining 13mm bolts from the pump pulley and remove the pulley itself. You might want to leave the chain attached to the pulley so it doesn't spin when you're trying to undo the bolts. As you can see I didn't and had to reattach it, but now that the fan etc is gone there's a lot of room to work. Once you've got the pulley off, remove the 10mm bolts holding the water pump on...make sure you have the catch pan under the water pump to catch the anti freeze. One dead water pump. You can't see that there's anything wrong with it, but it ate it's bearings. Installation is the reverse of the removal. Make sure you clean the surface where the water pump sits. The gasket only goes on one way, so if the holes don't line up, flip the gasket around. The water pump bolts only need to be hand tight...89 inch pounds, so don't swing off them. The pulley bolts get torqued to 18 ft pounds. New pump installed with the pulley and belt reattached. Reattach the chain so you can get the pulley bolts to the right torque. Now is a good time to wash down everything with clean water to remove the antifreeze that you spilled...it's no good for paint etc. When you're putting the shroud and fan back on, make sure that the pins on the bottom of the shroud go into the locating holes, you'll have to get under the truck to see and align them. Be careful when you reattach the fan clutch nut to the shaft, the threads are fine and it's really easy to cross thread them. There is a torque spec for the fan clutch nut, but you're not going to get a torque wrench in there, so go with the German torque setting...gud an tight. Remove the chain and put in the last pulley bolt. Plug the fan electrical connector back in, put the shroud bolts back and replace the top radiator hose. Top up the radiator with either Dexcool diluted 50/50 or whatever antifreeze you're running and do the normal burping of the system checking for leaks while you're running the truck. All said and done, about an hour and it's really quite simple.