Stanley & Sons Services is located in Wallingford, CT, and specializes in diesel truck, equipment and trailer repair. We have a full service repair shop with all of the latest OEM diagnostic software to troubleshoot issues with all major engine and transmission manufactures such as Cummins, CAT, Detroit, Allison, Paccar, and Eaton. We also have multiple fully equipped service trucks to perform the majority of repairs on site. We also repair light duty diesel & gas pick up trucks and specialize in performance upgrades for Powerstroke, Duramax and Cummins engines in Ford, GM and Ram trucks! We offer repair services for trucks, trailers and heavy equipment as well as towing, road service and junk vehicle removal. On call & On site 24/7!