Lobo411, my heat does not work, I need my heater core replaced. Last time I tried turning on my heat out of curiosity. It almost sounded like me engine revved, but, the engine RPM's didn't change and I didn't feel any air force (if you wanna call it that) coming from the vents. It was soooo freakin' weird, so I've never touched the heater controls after that. But, the AC works fine.
XLTrunner, it's a rotating noise, not a whirring noise.
To everyone: I gave all the info I could. I literally hear a rotating noise from my passenger side, and when I open the hood, it sounds like it's coming from the brake booster. But, the brakes work perfectly fine. They don't feel mushy or hard to press. They feel like normal brakes. When the brake booster went out on my dads truck, the brakes felt like you had to all but press them to the floor. It went out on me when I was towing a trailer home, and boy that scared the living sh*t out of me. I was about to pull into my driveway and the brakes didn't work and I panicked and slammed the E-brake going like maybe 5 MPH so I didn't hit our garage door. But, this feels nothing like that. The brakes feel the exact same as they always have.