New truck update….Some good news, some bad. They have not been able to pin down what is causing the noise yet, but they have made it worse. They ruled out the crankshaft bearings today though. That would have been VERY expensive. They narrowed it down to the value chain somewhere. Likely one of the middle two cylinders. They are having an engine “specialist” come look at it tomorrow morning. The strange part is that it LOOKS fine. No damage or wear that they can see….hmmmm….