Duramax Diesel Message - Engine Reduced Power
We have a 2008 Chevy Silverado with 6.6L Duramax Diesel. If we are towing and go over 60 MPH, we get a dashboard message which says "Engine Reduced power". The motor powers down and we cant go any further. We have asked different GM service shops and no one seems to be able to help us. We have discovered that once we prime the fuel canister and restart the truck, we have power again. Note, we are not over weight capacity.
Has anyone experienced this or can help us determine what the problem is?