I have an 06 CCSB 2500 4x4 all stock with the exception of a 4 inch down pipe back exhaust no muffler. It has 39,000 miles. It's also never had a programmer on it. It keeps throwing the codes P003A & P2563. It's been to the dealership twice. The first time they replaced the vane position sensor. The second time they replaced the turbo vane control valve. They've also checked all the wiring and connections. The code has just come up again. They really don't know what the problem could be now. As with most of these dealerships, they really don't have anyone that highly familiar with diesels. I'm not really excited about having the cab pulled to have a new turbo put on it. Anyone have any ideas?