Mid Michigan Truck & Trailer Repair provides 24 Hour Roadside Service for Semi Trucks and Trailers with our. Mobile Truck, Trailer & Tire Repair. At our Full Service Shop we can perform Computer Diagnostics, Electrical Repairs, A/C Service, Engine & Transmission Repair as well as Suspension, Hydraulics, Brakes & Air Leaks, Welding & Mobile Welding, APU Service, DPF Cleaning, Our services also offer New, Used & Recap Tires. We can perform DOT Inspections, PM Service, Oil Change & Lube. We can order Engine, Transmission, Steering Parts, if needed, and we can get Body, Cab, Drivetrain and Suspension Parts and have you back on the road in no time.