Full-Service Diesel Repair
Heavy-duty and medium-duty trucks, trailers, and reefer units. From oil changes to engine overhauls — Truck City Diesel keeps your equipment on the road.
Engine Repair & Overhaul
Complete engine diagnostics, repair, and full overhauls for all major diesel platforms including Cummins, Detroit, Caterpillar, and more. We handle everything from minor tune-ups to complete rebuilds, getting your truck back to peak performance.
Preventive Maintenance & Oil Changes
Scheduled PM services including oil changes, filter replacements, fluid checks, and full PM inspections. We service heavy-duty and medium-duty trucks on your mileage intervals to avoid costly breakdowns.
Reefer Unit Service
Full maintenance and repair for refrigerated trailer units. We service Carrier and Thermo King reefer systems to keep your temperature-sensitive loads protected and your unit running reliably on every run.
Medium Duty Trucks
We work on medium-duty commercial trucks in addition to Class 8 semis. If you run a box truck, flatbed, or other medium-duty equipment, bring it in — we have the experience and equipment to handle it.
Transmission Service
Expert transmission diagnosis and repair for manual and automatic heavy-duty transmissions. We service Eaton Fuller, Allison, and other major brands to keep your drivetrain running smooth.
Brake Systems
Full air brake system inspection, repair, and replacement. We ensure your truck meets all federal safety standards with thorough brake work on drums, shoes, chambers, and air lines.
Electrical Systems
Comprehensive electrical diagnostics and repair for modern commercial trucks. From wiring harnesses to ECM issues, our technicians trace and fix electrical faults fast.
Diagnostics
State-of-the-art diagnostic equipment for all major truck brands. We read fault codes, perform system tests, and pinpoint issues quickly so you spend less time in the shop and more time on the road.
Fabrication & Welding
Custom metal fabrication for brackets, mounts, exhaust components, and structural repairs. Our in-house fab capabilities mean we can solve problems that other shops can't.
DOT Inspections
Annual DOT inspections performed by certified technicians. We inspect your vehicle to federal standards and provide documentation to keep you compliant and on the road legally.
Ready to Get Your Truck Back on the Road?
Call us or stop by our Milwaukee shop at 6242 N 64th St. We work on heavy-duty and medium-duty trucks, trailers, and Carrier & Thermo King reefer units.