Any guesses would be appreciated
Replaced belts but the noise still remains. Today I started the Zuk and it made the whistling\squeal for 4 minutes while warming up. When I drove away it made the noise and then it stopped when I was at a light or stop sign but when I accelerated it would squeal and when I was at an idle it stopped. After another 5 minutes it stopped all together.
A/C Compressor maybe?
The only time the AC compressor has drag on it is when the AC is on. So if it is squealing and the AC is off, then it isn't the AC compressor.
Did you replace both belts, or just the AC/PS one? In my experience, the AC/PS belt will not squeal unless the AC is on, or the belt is obviously too loose. The alternator/water pump belt is the one that will be the one that will squeal, if you have a sqealing belt.
Did you clean the pulleys before you put the new belt on? If there was some oil or something on the pulleys, then that can cause a belt to slip and squeal. If you didn't clean the pulleys (I use brake cleaner and compressed air), then the oil would have gotten onto the new belt.
But my guess is that you either replaced the wrong belt, or if you replaced both of them, you didn't get the belts tight enough.