✓Independent commercial truck repair✓Mississauga shop✓Written findings before repair✓Fleet & owner-operator support
Problems we routinely assess.
We support mixed fleets and owner-operators across common commercial truck systems.
- Check-engine and warning lights
- Loss of power and derate
- No-start and intermittent starting faults
- DEF, DPF and SCR faults
- Electrical and communication faults
A diagnosis you can make a decision from.
We start with the complaint, vehicle identity and fault information, then test the system implicated by the evidence.
- Confirm the complaint
- Scan supported control modules
- Review live data and electrical inputs
- Perform targeted physical tests
- Document findings and recommended next step
Commercial Truck Diagnostics in Mississauga — answered.
What information should I provide?
Provide year, make, model, VIN, mileage, symptoms, warning lights, fault codes and whether the truck is currently drivable.
Can you diagnose multiple truck makes?
Yes. Capability depends on the vehicle, engine, system and tooling required, so we confirm support from the VIN and complaint.
Do you replace parts before diagnosing?
Our approach is to establish evidence first and obtain authorization before repair work begins.
Book service
Tell us what the truck is doing.
Have the year, make, model, VIN, mileage, warning lights or fault codes, and whether the truck can be driven safely.
Mr Diesel Inc. · 5900 Dixie Rd, Unit 13, Mississauga ON L4W 1E9