Chicago's Trusted Truck Repair Shop
KNI Truck Repair is Chicago's trusted shop for heavy-duty diesel and trailer repair. Located in the heart of the Chicago west suburbs, we serve owner-operators and fleets all around. From engine overhauls to brake repair to 24/7 mobile roadside service, we get you back on the road fast. No runaround. No guesswork. Just honest truck repair from people who know the industry. Serving Melrose Park, Bellwood, Franklin Park, Stone Park, Northlake, Hillside, Maywood, Elmhurst, and the greater Chicagoland area.
Trusted by Chicago's commercial fleet operators
We've built our reputation on reliable repairs, mobile service convenience, and a commitment to keeping trucks on the road.
100%
Mobile repair capability
We bring our expertise to your location with full mobile repair service across Chicago.
24/7
Emergency availability
Breakdowns don't wait. We respond to urgent calls when your fleet needs us most.
500+
Trucks serviced
Commercial operators in Chicago rely on us for maintenance and emergency repairs.
10+
Years experience
We know semi trucks and trailers inside out. That experience shows in every repair.
Trusted by Chicago truck operators
See why commercial fleets and owner-operators depend on KNI TRUCK REPAIR for reliable maintenance and emergency mobile service.
KNI has hands down the best mechanics I’ve ever worked with! They know exactly what they are doing and get the job done right the first time. Super professional, honest, and fast—They don’t waste your time. Whether it’s a small issue or a major repair, I trust KNI 100%. If you want your truck or trailer in the best hands, call KNI . Highly recommend!
Baljot Singh
Owner-Operator ★★★★★
We run a fleet of 50 semis and KNI handles all our scheduled maintenance. They know our trucks inside out, keep detailed records, and always communicate before work starts. That's reliability.
Svetlozar K.
Fleet Manager, Fair Trucking Corp ★★★★★
Their facility is clean, organized, and they explain what needs fixing instead of just charging you. The brake line replacement was done right the first time. We're back with them every time.
David Molina
Independent Operator, Refrigerated Freight ★★★★★
Had a trailer axle problem at 2 AM. KNI answered the phone, met us within an hour, and fixed it before sunrise. That's the kind of partner you need in this business.
Robert Taylor
Owner, Speciality Hauling Services ★★★★★
We switched our trailer maintenance to KNI last year. Their attention to detail caught issues before they became expensive problems. That proactive approach saves us money and downtime.
Lisa Rodriguez
Operations Director, Midwest Distribution ★★★★★