I am a new member from Texas. Had the same problem with a leak in the coolant line to the turbo. Took it to a dealership who had to remove the cab in order to get to the rubber hose below the air intake. The heat caused the hose to fail and the truck looses all coolant. It took 8 days and $2,876 to repair. No local mechanic would touch it . It is definitely a design flaw and gives no warning.