when i'm under full power from about 45-75 MPH, the engine makes a loud squeal (i'm not a car expert, but it sounds like a belt slipping... my brother listened to it as well and he said the sound is similar to when a water pump is going out). i took it to the dealer and they replaced sc tensioner and said it was fixed. as soon as i picked it up, i realized the fix didn't change anything so i dropped it off again. has anyone had a similar experience? i searched the forums but didn't see anything.

 

what is your vin code?and mileage ...