coolant system

hello all my 2000 LHS leaked water last night though it did not leak today i noticed that the upper hose, i was able to squeeze when the car is running regularly it should have pressure so that it shows water passage. how do i know if the water pump is done or if its the thermostat? also where are these items located at? please help

thanks

If you can squeeze the hose then change the water pump.what size motor?if its a 3.5 then its behind the panel in front of the motor,you will have to take off the timing belt,change the pump then reset your timing.about a 2 hour job.if you are in ohio hell, ill do it for 20.00 bucks,its pretty easy.