Hearst, Ontario
Our Services
From routine maintenance to emergency road service, Serge G&D Repair Inc. keeps northern Ontario's trucks, trailers, and heavy equipment running.
24 HR Road Service: (705) 362-5633Air Conditioning
Compressor replacement, air dryer service, condenser repair, and full A/C system diagnostics for trucks and trailers.
Learn moreCode Reader / Diagnostics
Engine and ABS fault code scanning with professional diagnostic tools. Identify issues fast before they become costly repairs.
Learn moreHeavy Equipment
Full mechanical service on excavators, skid steers, and all heavy machinery — Caterpillar, Komatsu, Kubota, Case, John Deere.
Learn moreFarming & Equipment
MTI Canada authorized reseller. Agricultural equipment service, parts supply, and field repairs across northern Ontario.
Learn moreHydraulics
Custom hose fabrication, cylinder rebuilds, pump and motor service. High-pressure hydraulic systems up to 6,000 PSI.
Learn moreReefer Units
Thermo King and Carrier refrigeration unit repair, maintenance, and diagnostics. Keep your cold chain intact.
Learn more24 HR Road Service
Broke down on the highway? We come to you — 24 hours a day, 7 days a week across northern Ontario.
Learn moreSafety Check (MTO)
Ontario MTO-compliant safety inspections. 8-point commercial vehicle inspection with certified technicians.
Learn moreWelding & Fabrication
MIG, TIG, and stick welding. Structural repairs, custom fabrication, trailer repair, and aluminum welding. Steel supply from Acier Leroux and Northern Allied.
Learn moreTires
Passenger and transport tire sales and service. Brands include Michelin, Bridgestone, Goodyear, Continental, and Sailmax.
Learn moreHeaters
Authorized dealer for Webasto and General Components diesel heaters. Eberspächer service also available. Cab heaters, engine pre-heat, installation, repair, and warranty for trucks and heavy equipment.
Learn moreUtility Trailer Parts
Authorized Dexter Index and Frameco dealer. Axles, brakes, suspension, lighting, jacks, and custom axle orders for utility, flatbed, and dump trailers.
Learn moreInstatraction
Instatraction automatic tire chain systems — installation, service, and parts.
Suspension & Bushings
Leaf spring replacement, air bag suspension, bushing replacement, and alignment for commercial vehicles.
Electrical
Truck and trailer electrical diagnostics, wiring repair, lighting, and battery service.
Brakes
Air brake service, drum and rotor replacement, slack adjuster service, and brake chamber replacement.
Engine & Powertrain
Engine diagnostics, minor engine repair, transmission service, and drivetrain maintenance.
Preventive Maintenance
Scheduled oil changes, filter service, lubrication, and full PM inspections to keep your fleet on the road.
Need service now?
We're available 24 hours for road service emergencies.