With the colder weather now here in Minnesota, owners of diesel Silverado, Sierra, Ram, and Nissan trucks may start experiencing widely spread problems with their diesel fluid exhaust (DEF) systems. If you are an owner of a diesel truck that is still under warranty and you are having problems with your DEF system, please give us a free, no obligation call to discuss your rights at 763-392-0500 or fill out our free online case evaluation.