Re: Transmission and Steering??
Your 5.7L should have the hydraulic cooling fan, right? In that case, i would remove the connector from the coolant temperature sensor and start the engine. A fault code will be set, which lateron must be reset, but not important for now. Check if the hydraulic cooling fan goes to high speed. (looks like a 747 in take off). With a bad steering pump, the fan will also not run at high speed. You can then also check if the noise comes from the pump or not.