Frequently Asked Questions About Commercial Truck Repair
Explore answers to the most common questions from truck drivers, owner-operators, and fleet managers in Cornwall, South Glengarry, and beyond. Our certified team is dedicated to minimizing your downtime.
FAQs
Your Top Truck & Trailer Repair FAQs—Answered
From urgent roadside breakdowns to MTO inspections, emissions testing, and custom repairs, these FAQs reflect what matters most to commercial drivers and fleet managers across Cornwall, South Glengarry, and Williamstown.
What types of trucks and trailers do you service at your Cornwall/South Glengarry locations?
We exclusively service heavy-duty commercial trucks and trailers, specializing in Volvo and Freightliner models. Our shop is equipped to handle engine and transmission repairs, DPF/DEF troubleshooting, driveline and A/C repairs, tire services, and more. Please note, we do not service oil and gas transport equipment, sandblasting projects, or straight trucks. Our expertise is focused on highway tractors and commercial trailers critical to the Ontario supply chain.
Are you certified for MTO inspections and emissions testing in Ontario?
Yes. RJ Truck & Trailer Repair Inc. is a certified MTO inspection station and emissions testing facility for Ontario commercial vehicles. Our inspections meet all provincial compliance requirements, helping you avoid costly “Out of Service” orders and ensuring your trucks are road-legal. We also assist with Ontario plate registration emissions for out-of-province vehicles entering the market.
Do you offer emergency roadside assistance for breakdowns near Cornwall or South Glengarry?
Absolutely. We provide 24/7 emergency roadside support for commercial truck and trailer breakdowns in Cornwall, South Glengarry, Williamstown, and along Highway 401. Our team understands that every hour of downtime costs you revenue, so we prioritize rapid response to get you back on the road safely and efficiently. For non-emergency repairs, our shop operates extended hours Monday to Saturday.
What is your turnaround time for major repairs such as DPF/DEF troubleshooting or transmission issues?
Turnaround time depends on the scope of the repair and parts availability, but our family-run model and in-house fabrication capabilities allow us to minimize delays—especially for DPF/DEF systems, custom hose fabrication, and urgent compliance repairs. Whenever possible, we prioritize getting drivers back on the road quickly without sacrificing long-term equipment longevity. For high-urgency issues, call us directly for immediate ETA.
Do you carry used parts, and how can I check availability for Volvo or Freightliner components?
Yes. We maintain a dedicated inventory of high-quality used parts for Volvo and Freightliner trucks. Our parts stock is constantly updated to meet demand for common breakdowns and hard-to-find components. To check current availability for specific years or models, please call us directly at (343) 883-4989 or (613) 861-7200. Let us know your truck’s details, and we’ll confirm what’s in stock or advise on alternatives.
What services do you offer beyond mechanical repairs and compliance inspections?
In addition to core mechanical services (engine, transmission, DPF/DEF, driveline, A/C, fifth-wheel adjustments), we offer tire services, trailer repairs, oil changes, and a commercial truck wash for fleet presentation and compliance. Our shop is committed to being a one-stop solution for heavy-duty operators in Cornwall, South Glengarry, and surrounding areas.
How does your family-run approach benefit drivers and fleet managers?
With over 30 years of hands-on driving and fleet maintenance experience, our family understands the pressures drivers face. We combine personal accountability, fair pricing, and technical authority as a certified MTO station to deliver fast, honest, and reliable service. Our driver-first philosophy means we treat your downtime as our emergency—building loyalty and trust with every repair.
Still have questions about truck repairs, MTO compliance, or urgent breakdowns in Cornwall or South Glengarry? Our expert team is ready to help—call us direct or send a message anytime.








