I have a 2000 trans am I am getting a whining noise come from front of the engine. I have replace all tensioner pulleys, alternator, powersteering, and the a/c. still wont go away. sounds like a supercharger whine coming from harmonic balancer pulley is this possible? only pulleys left r waterpump, alternator bracket pulley and harmonic balancer pulley. thanks

 

Have you replaced the belt? A worn belt can be just as noisy as a bad idler pulley. Easy way to check if belt is the source of the noise is to spray the belt with a little silicone spray or belt dressing. If it does go away replace the belt.

 

Pull the belt off & see if it stops

 

best advice yet