Most likely it's the fuel pump. My '02 Tahoe makes the same noise and it gets worse during the summer heat. It's located inside the gas tank so replacing it can be tricky and/or expensive. Unless/until the pump breaks, you just have to put up with it.
The whining could be related to the alternator. Does the car have any electrical problems such as the battery drains and dies while car running, are your belt(s) tight? in good condition? It might be a belt tensioner or idler pulley that is causing the whining.
"His constant whining was really grating on my nerves"
The word whining relates to when another person of any age moans or complains for reasons that have no real relevance or importance. Whining also relates to high pitched cries, sounds or complaining.
if it sounds like a high pitched whining then it may just be your cool air intake
The whining noise most likely indicates that your power steering is touching something and when you turn, it'd rub against whatever it is everytime you turn OR the belt could be running against a hose, a frame if the motor mounts are broken the bottom air conditioner would be resting against the frame with belt in between, causing the whining noise.
Whining noise near belts had pulleys adjusted any idea what is causing this
Fan belt slipping
Low on P/S fluid and/or air in the system.
loose timing belt, low transmission fluid in transaxle.
If the compressor is running, the blower is blowing, and there's no cold air, you need freon. If the whining is from under the hood, the compressor may be damaged. That's what happens when running without freon.
Could be a turbocharger, or a low oil level in a manual transmission causing it to "howl".
Its could be the turbo your hearing...