I have a bone stock 97 2500 4x4, Auto trans, 4. 10. with 94,000 miles. I took my truck in for some work including valve adjusment. And whin I got my truck back I was hearing a sound like a screaching belt that was comming from the turbo area. This would only happen whin steping on or relesing the trottle and would be a constant at 75mph. The macanick says that it is the air in the turbo going throu the buypass switch thing. I think I know what it is but would like to here what everyone els thinks it is first. O and the dealer said they wont fix it because nuthing is broke yeat.
Boy I cant wait till I am stuck on the side of the road waiting for a tow truck to show up.
O and I have never had a problem with my truck.
Boy I cant wait till I am stuck on the side of the road waiting for a tow truck to show up.

O and I have never had a problem with my truck.