A water pump? In all vehicles that I've had and know of. Your radiator has an intake and an outtake, Your intake goes from the radiator, to the thermostat, the thermostat connects usually directly to the water pump or only has a few inch distance from that.. It circulates the coolant around / in the block. and feeds it out of the block usually on the opposite side, it registers on your vehicles thermometer (the thing that tells you your engine temp) and back in to the radiator.
Upper is hose connected to top of radiator, lower is hose connected to bottom of radiator.
That is the lower hose and the one connected to the radiator is the upper one..
Lok at the engine end of the upper radiator hose no its not its at the lower end of the radiator hose end
The lower radiator hose supplies the water pump. The upper radiator hose supplies the radiator.
If your truck is overheating!!! Then check the upper radiator and lower radiator hose's , if the lower is cooler the the upper the either the thermostat is not opening or the radiator is clogged
Remove the upper and lower radiator hoses and transmission lines from the radiator. Remove the fan shroud and the upper and lower bolts. Raise the radiator up and out.
Upper and lower radiator, inlet and outlet heater core, bypass,Upper and lower radiator, inlet and outlet heater core, bypass,
upper and lower end of radiator
The lower radiator hose is exposed the more weather.
thersmostat
Remove fan shroud Drain radiator Remove upper and lower radiator hoses Remove upper mounting bolts Lift radiator out of lower support cradle
The upper radiator hose is attached to the thermostat housing.