01
Roadside Breakdown & No-Start
Won't crank, cranks but won't fire, derate light on the dash, or shut down on the ramp. We diagnose on the shoulder and get you moving or get you told honestly what's wrong.
Vaughan · Ontario · Since 2009
We come
to the
truck.
ONO Truck & Trailer Mobile Service is a fully equipped heavy-duty mechanic that travels to you. No tow, no yard, no waiting three days for a bay to open up. We roll out of Vaughan with the diagnostic laptop, the air tools and the parts already on board.
Twenty-four hours a day, seven days a week — including the 2 a.m. calls on the 400, the yard in Concord, and the loading dock in Woodbridge that has to be empty by six.
Call (647) 717-4771
Answered live, day or night. No call centre.
24/7 Dispatch
GTA + Golden Horseshoe
Licensed 310T Technicians
Fleet Accounts Welcome
What we do
The work
Everything below happens in your yard, on your shoulder, or at your dock. If it can be done without a hoist, we do it on site. If it genuinely needs a shop, we tell you straight and help you get there.
02
Heavy-Duty Diagnostics
Full laptop diagnostics on Cummins, Detroit, PACCAR, Volvo/Mack and International platforms. Active and inactive fault codes read, cleared and explained — not just handed to you as a printout.
03
Air Brakes & Air Systems
Air leaks traced with an ultrasonic detector, compressor and governor work, slack adjusters, chambers, valves, and full brake jobs on tractor and trailer axles. Safety-inspection-ready when we leave.
04
Tires & Wheel End
Roadside tire changes on steer, drive and trailer positions. Wheel seals, bearings, kingpins and hub work. We carry common 11R22.5 and 295/75R22.5 sizes on the van.
05
Trailer Repair & Electrical
Lighting faults, ABS trailer codes, 7-way and J560 plug issues, landing gear, doors, hinges, mud flaps, and reefer unit no-starts. Trailer electrical gremlins are our favourite kind of problem.
06
Scheduled Fleet Maintenance
PM service on your schedule, at your yard, overnight so nothing is down during the day. Oil and filter service, fuel and water separators, coolant, belts, hoses, greasing, and a written condition report per unit.
07
Cooling, Charging & Starting
Overheating on the 401, alternator not charging, batteries not holding, starter clicking. Radiators, water pumps, thermostats, alternators, starters and battery load testing on site.
08
Pre-Purchase & Safety Inspections
Buying a used tractor or trailer? We inspect it where it sits — brakes, air system, frame, fifth wheel, lights, tires, and a code scan — and give you a straight yes, no, or here's what it'll cost.
Who we work with
Yards, fleets,
and one-truck owners
Most of our week is spent with small and mid-size fleets across Vaughan, Concord, Woodbridge, Brampton and Mississauga — outfits running anywhere from three trucks to sixty. We know what a down unit costs you per hour, and we work like it.
The rest is owner-operators. One truck, one trailer, and a load that has to be somewhere. Those calls get the same van and the same technician as the fleet work, because a single truck down is a single income stopped.
We also take on dealership overflow, yard moves, and auction-site inspections when a unit needs eyes on it before it rolls.
- Years on the road
- 16
- Units serviced last year
- 1,400+
- Average roadside arrival
- 52 min
- Repeat fleet clients
- 38
“We had a unit throw an aftertreatment code at 11 p.m. in Concord. ONO was on it in under an hour, cleared it properly, and the truck made its 6 a.m. delivery. That's the whole review.”
— Dispatch manager, 14-truck carrier, Concord ON
Where we go
Coverage
We're based on Highway 7 in Vaughan and run the whole GTA plus the corridors out of it. If you're outside the list below, call anyway — we take longer runs when the schedule allows.
Core — under an hour
- Vaughan incl. Woodbridge, Maple, Thornhill
- Concord industrial & yard calls
- North York incl. Downsview
- Richmond Hill
- Brampton incl. Steeles industrial
- Mississauga incl. Malton, Airport Rd
Extended — 1 to 2 hours
- Toronto core & waterfront
- Etobicoke
- Markham incl. Unionville
- Bolton & Caledon
- Milton & Halton Hills
- Newmarket & Aurora
Corridors & highway calls
- Hwy 400 north & south
- Hwy 401 through the GTA
- Hwy 407 ETR
- Hwy 427 & 409
- Hwy 7 our home stretch
- QEW toward the Niagara corridor
Highway calls: pull as far onto the shoulder as the truck allows, get your triangles out, and stay behind the barrier. We'll find you.
Dispatch
Open all
seven days
Not “24/7” as a marketing line — the phone is genuinely answered at 3 a.m. by someone who can dispatch a van.
| Monday | Open 24 hours |
|---|---|
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
Get us out
Call the
number
One phone line, answered around the clock. No forms, no ticket queue, no waiting for a callback window.
Phone — 24 hours
(647) 717-4771
Tap to call
Service area
Vaughan & the GTA
Highway 400 / 401 / 407 corridors Mobile — we come to the unit
Highway 400 / 401 / 407 corridors Mobile — we come to the unit
Fleet accounts
Monthly PM contracts
Net-30 invoicing Ask for the fleet desk when you call
Net-30 invoicing Ask for the fleet desk when you call
ONO Truck & Trailer Mobile Service · Licensed 310T technicians · Fully insured · Serving Vaughan and the Greater Toronto Area since 2009.