road assistance & fleet repair Specialists in Wisconsin

Established in 1994 by Kerry Block, Block Diesel Repair started as a small diesel repair shop specializing in road assistance services for the Janesville, Wisconsin, community. Since then, Kerry's mom-and-pop shop has grown into one of Wisconsin's finest repair services, with a 13,000 sq. ft. facility boasting six drive-thru bays, over a dozen industry-certified technicians ready to tackle any type of repair, and the latest and greatest in equipment and tools.
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But the story doesn't end there. At Block Diesel Repair, we work on fleets, light-, medium-, and heavy-duty trucks of all makes, campers, RVs, motor homes, and heavy equipment. Although our general diesel services cover your fleet from bumper to bumper, we are experts in truck and trailer alignment and suspension services, with highly-trained truck and trailer technicians, specialized equipment, and the largest alignment pit in all of Wisconsin at our disposal. Apart from this, you can count on us for engine conversion, fleet truck & trailer repair, and on-site preventive maintenance.
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Our motto, "Built on respect, fueled by excellence," isn't just a couple of words stringed together. We pride ourselves on being a close-knit family, treating all of our customers and employees with the utmost respect. And, when you come to our shop, we can guarantee you'll be in good hands. Our shop currently services the trucks of hundreds of owner-operators and fleet managers on the road, providing pick-up and delivery, 3-month to 2-year warranties, and best-in-class repair work for all of your diesel needs.
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If you've had low-quality repairs at other diesel shops, come to Block Diesel Repair. Our technicians, each with over 10 years of experience and industry certifications from CAT, Cummins, Volvo, Mack, Detroit, Wabco, Bendix, Meritor, Hunter, ASE, and Delco, can handle whatever your truck needs.
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Stuck on the side of the road or can't leave your fleet's headquarters? No worries. We'll dispatch one of our six mobile units to your location, wherever it may be. Even though emergency roadside service isn't the only offering of Block Diesel Repair anymore, Kerry is still committed to ensuring that your truck or fleet is always up and running, so you can focus on what you love doing most.
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We understand that owner-operators and fleet owners have unique needs, and that's why we go above and beyond to provide leading services that exceed your expectations. Contact us today for all your truck and fleet repair needs!