My 05 Chevy started acting up the other day. While driving down hill i start to hear what sounds like a boost leak. When I got to the bottom of the hill I hit the throttle and no go. The truck wont seem to make boost, or at least not much. After limping it home I pulled off the intake to check the turbo. No visible damage to the compressor side and no excessive play in the shaft. With the turbo heat shield removed I can feel air leaking around the turbo but I can't pinpoint an exact spot. There are two sensors on top of the turbo. I believe one is a vane position sensor and the other is the controller. If I unplug either the air leak goes away.
Anybody ever experience this before? O ya the truck only has 18000 miles