so my 2006 ss s/c with 40k miles on it is making a very high pitch but rather soft noise when i am accelerating slowly...its hard to explain but its almost like metal screetching on metal. i cant figure out what it could be..only happens when i am very light on the throttle it seems like. i was thinking maybe gear fluid is low, maybe a scar on the flywheel but im not sure. Has anyone else had this problem? and if so what was the fix?