not really familiar with that area but get out the yellow pages and most truck shops can do one. theres a shop by the husky on dixie that we used but can't remember the name. big freight shares there yard.
How new is it? all the new DEF Cummins can only be fixed by a cummins place as they refuse to give any dealerships the software to diagnose and fix a cummins engine. I delivered new trucks from factories to dealerships for a time and thats the reason that even tho the cummins is the best DEF engine out there its selling the worst.