Diesel Diagnostic & Repair

🚛 Diesel Diagnostic & Repair Heavy-Duty Truck & Trailer Service | Harrisville, PA At Diesel Diagnostic & Repair, we specialize in semi truck and trailer repairs, diesel diagnostics, preventive maintenance, and 24/7 roadside service (609) 721-3137. Located 4881 Pittsburgh Road Harrisville, PA 16038

🚨 24/7 Roadside Assistance Stuck on the road? We’ve got your back — day or night. Our mobile repair truck is ready to go when you call for: No-starts, Air leaks Brake lockups DPF/DEF derates Electrical issues Fuel system problems We cover throughout Harrisville, I-80, and surrounding towns.

Oil Changes & PM Services – Fast service, high-quality parts and fluids

We service all major makes and models — including Thermo King, Carrier, and other refrigerated trailer units. Whether your reefer won’t start, isn’t cooling, or is throwing codes, our technicians will get it diagnosed and fixed fast.

Truck & Trailer Tire Changes – Quick, safe tire replacements and repairs on all heavy-duty tires

Brake & Suspension Repair – Air brakes, chambers, valves, and suspension systems for tractors and trailers

Truck, Trailer, Reefer Unit Repair & Tire Service – Harrisville, PA At Diesel Diagnostic & Repair, we specialize in heavy-duty truck and trailer repairs, including reefer unit service and tire changes. Based in Harrisville, PA, we offer fast, reliable in-shop and 24/7 roadside service

Annual Vehicle Inspections. Located in Harrisville, PA We’re certified to perform Pennsylvania Annual Vehicle Inspections (AVIR) for commercial vehicles and trailers — complete with the official inspection sticker when your unit passes.

Business Hours: 🕗 📞 24/7 Call Service: Cell: (609) 721-3137 | Work: (814) 786-3700 Let us help keep your rig running strong — day or night.

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