Ryan's Diesel Service has been providing exceptional customer service in Southeastern Wisconsin since 2009. With a 9000 sq ft facility, they offer a wide range of diesel repair and service, including drive-train, suspension, motor swaps, and performance builds. The business also manufactures many parts in-house on CNC machines, ensuring seamless and quick turnaround times. Customers have consistently praised the expertise and professionalism of the team at Ryan's Diesel Service. The owner, Ryan, is known for his knowledgeable and straightforward approach, and he personally assists customers with their inquiries and concerns. Reviewers have highlighted the company's reasonable prices, timely service, and high-quality products, making it a trusted choice for diesel enthusiasts in the region. Overall, Ryan's Diesel Service has established itself as a reliable and customer-focused diesel performance shop, offering a wide range of services and a commitment to excellence that has earned them a strong reputation in the local community.
Had our TCM on our 2012 GMC go bad, found Ryan after a google search. Placed my order for a plug and play TCM. Order came 3 days later and install couldn’t have been easier. Unplug old one and plug in new one. Super simple. Works great. Highly recommend.
March 2026
Never physically been to this place but I ordered a new TCM off of their website for my 2013 LML it came pre-programmed and shipped within 24 hours of their business day after receiving my order. I'm very satisfied with the part and the service I received thank you
January 2026
They are very responsive and keep you updated with the process. Part arrived on time and when they said it would. Installed the new part and it works perfect. Outstanding service all around! Great job Ryans!!!
