coolant leak...

how do i remove and what is the part name of the elbow hose on the passiner side of the motor,that runns from the lower intake , under a type of sensor to a brakett by the tensoner pully directly above the water pump to the heater core inlet? its pissing out of the bottom due to a crack in this plastic pipe. at first i thought it was the water pump, but i actually saw it dripping onto the manafold. its really bad where on a 5 mile trip i over heat, and loose all coolant. its a 3.8 chevy z34. ty Dave

just real quick, this pipe ......to install it do i need to remove the intake manafolds? the pipe has a 90 deg. bend and both holes are aligned with each other. thanks