About Us

Who We Are

At Diesel Doctor Truck & Trailer Repair, we are a dedicated team of licensed 310T mechanics with years of hands-on experience. We know the importance of keeping your trucks and trailers running safely and reliably. Based in the GTA, we’re committed to providing fast, honest, and high-quality repair services to truck owners and fleet operators.

Our Mission

Our mission is simple: minimize your downtime and maximize your truck’s performance. Whether it’s emergency breakdowns or scheduled maintenance, we’re here to keep your business moving.

Our Expertise

We specialize in servicing and repairing:

• Volvo, Freightliner, Kenworth, Peterbilt, Mack, International, Western Star, and Hino trucks

• All major trailers including dry vans, reefers, and flatbeds

What Makes Us Different

• Licensed & Skilled Mechanics: Certified 310T technicians with deep knowledge of modern diesel systems

• Complete Service: Engine diagnostics, DPF/DEF service, suspension, brakes, air systems, transmission, trailer repairs & more

• Quick Turnaround: We understand downtime hurts — we get you back on the road fast

• Fair & Transparent Pricing: Competitive rates with no hidden costs

Why Choose Diesel Doctor

We’re more than just a repair shop — we’re your partners in keeping your fleet running strong. Every repair is done with precision and care so you can drive with confidence.