Comprehensive Truck & Trailer Repairs in South Glengarry

Certified MTO inspections, emissions testing, and heavy-duty repairs—minimizing downtime for drivers and fleets along the Cornwall and Highway 401 corridor.

OUR SERVICES

Certified Heavy-Duty Repair & Compliance Services

At RJ Truck & Trailer Repair Inc., we keep your fleet moving and your business compliant. With 30 years of real-world trucking experience, we offer owner-operators and transport companies a full range of certified mechanical solutions—from MTO inspections and emissions testing to advanced engine diagnostics, DPF/DEF troubleshooting, and custom fabrication. Every service is delivered with urgency, fairness, and technical confidence. Whether you need regular fleet maintenance, emergency roadside support, or specialized repairs for Volvo and Freightliner trucks, our Boundary Road shop in South Glengarry is your supply chain’s critical mechanical node.

Black gear icon.

Mobile Truck Repair Cornwall

Our Cornwall mobile repair service arrives equipped to handle diagnostics, minor repairs, and emergencies, reducing delays and towing expenses significantly.

Black gear icon, on a white background.

Heavy Duty Mechanical Repairs

We diagnose and repair heavy duty trucks, restoring performance, safety, and reliability while minimizing costly downtime for operators and fleets.

Black cogwheel icon.

DPF/DEF Troubleshooting

We identify clogged filters, sensor problems, and DEF system faults, restoring efficiency, compliance, and engine performance without guesswork or replacements.

Black gear icon.

MTO Inspections & Emissions

Our licensed technicians perform thorough MTO inspections, helping you stay compliant, avoid penalties, and operate confidently on every route daily.