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Your fan is operating normally. Pressure from the power steering pump disengages the fan, but there is still some parasitic drag so it spins slowly. You should be able to stop the fan from spinning rather easily when its disengaged. With the truck off there is no pressure so the fan is engaged...

Yeah I know, I've just never seen it get much above the 200 mark before and I really don't want to have to deal with a blown head gasket haha. I drove it a little today to see what it did and the fan came on when the gauge read a little under 200 and everything was fine. I'm still thinking the...

Could be, but I figured the fan should have came on at least once on the way home.

Alright, now I've gotten hit by the overheating hmmwv bug. Let me first say that pretty much everything in the cooling system is new except for the radiator. Its never really given me a problem and usually stayed right below 200 with the fan operating normally. While I was running it around this...

yes, but it has a clutch that is actuated by pressure from the power steering pump that goes through a solenoid and turns it on and off.

I've never seem mine get over 200 with a new thermostat and water pump. In fact it usually sits around 170 unless I get on the highway and then it creeps up to sit just below 200. Is your fan coming on?