hey everyone I have a ram 1500, when I start it there is a loud whistle or squeal sound like it is more from the drivers side and on does it for a second then stops. Any thoughts? Also when truck is revd between 1300-1500 ther is a vibration in the gas pedal and seat and makes a kind of humming sound

 

Take off the serpentine belt, start it up. Noise gone? Then check all the pulleys, see if any bearings are going out. Also make sure the tensioner is actually apply pressure on the belt.