SS Auto Garage handles truck and trailer transmission repair in Montreal for heavy commercial vehicles. From gearbox diagnostics to full rebuilds, our technicians fix drivetrain problems correctly and efficiently.
Problems We Solve
A transmission problem rarely appears out of nowhere. It builds over time through small changes in how your truck shifts, responds, and performs under load. Commercial operators who catch these signs early spend far less on repairs than those who push through until something breaks completely. If your truck or trailer is showing any of the following, schedule a transmission diagnostic before a manageable issue turns into a full drivetrain failure on a loaded route:
Problems We Solve
OUR SERVICES
Our truck trailer transmission repair services cover every drivetrain need for commercial vehicles at our Saint-Laurent shop, from fluid maintenance through to complete rebuilds.
Heavy commercial trucks put enormous stress on their transmissions across every route they run. When shifting becomes unreliable or performance drops under load, our truck transmission repair in Montreal starts with accurate diagnostics to find the exact fault. We repair or replace only what is necessary using commercial-grade components, keeping your costs reasonable and your truck running reliably.
Trailer drivetrain faults put stress on every connected component. Ignoring them leads to damage that spreads further into the powertrain over time. Our trailer transmission repair in Montreal covers full system assessment, targeted component repairs, and fluid service to get your trailer drivetrain back to correct operating condition without unnecessary delays or parts replacements.
When a transmission is too far gone for cost-effective repair, replacement is the honest answer. We tell you which option makes more financial sense for your specific vehicle and situation before any decision is made. Replacement units are sourced to match your truck make, load rating, and drivetrain specification and installed correctly by our experienced technicians.
Inside every commercial transmission is a gearbox taking on the full force of your engine output under load. Worn gears, damaged bearings, and failed synchronizers all affect how your truck performs and fuel consumption climbs as the drivetrain fights itself. Our truck gearbox repair in Montreal includes complete internal teardown, component inspection, parts replacement, and post-repair gearbox diagnostic testing to confirm everything is working correctly.
A drivetrain fault does not stay contained. A worn universal joint, an unbalanced drive shaft, or a failing driveline component puts stress on the transmission, the axles, and the suspension simultaneously. Our truck driveline transmission repair and truck trailer driveline service in Montreal covers full driveline inspection, universal joint replacement, shaft repair, and balancing to restore clean power delivery from your transmission to your wheels.
The clutch is what stands between your engine and your transmission. A clutch that is slipping, dragging, or failing to engage cleanly makes the transmission work harder than it should and accelerates wear on both systems. Our clutch repair and clutch transmission service in Montreal covers clutch plate inspection, flywheel assessment, component replacement, and post-repair testing to confirm clean gear engagement.
OUR Maintenance SERVICES
Transmission problems on commercial trucks come in different forms but they all have one thing in common. They get more expensive the longer they go without proper attention. Here is what we deal with regularly at SS Auto Garage
Slipping and hard shifting are the two complaints we hear most from commercial truck operators. Both point to internal wear, fluid breakdown, or hydraulic pressure issues inside the transmission. We carry out full transmission diagnostics, replace worn internal components, and complete a transmission fluid change on the truck to restore smooth and consistent gear operation that holds up under daily commercial load.
A transmission that quits on a loaded truck stranded on a commercial route costs far more than just the repair. Lost delivery time, towing costs, and schedule disruption add up fast. We handle emergency truck transmission services in Montreal and prioritize getting commercial operators back on the road with proper heavy duty transmission repair, not temporary fixes that fail again within days.
Gearbox wear and driveline faults develop quietly over thousands of kilometers. By the time they are obvious, the damage has usually spread beyond the original fault. Our truck gearbox service and truck trailer driveline service in Montreal address both systems together when needed so you are not back in the shop two weeks later with a related fault that could have been caught and fixed at the same time.
A transmission that shifts late, a gearbox with excessive internal friction, or a driveline that is even slightly out of balance all force the engine to burn more fuel on every single run. Proper truck transmission maintenance in Montreal and correct drivetrain alignment is one of the most direct ways to bring fuel costs back down on a commercial vehicle that has started consuming more than it should.
Clutch failure on a manual commercial truck does not always announce itself dramatically. It starts with a slight slip under load, a longer pedal travel before engagement, or a faint burning smell on hills. Our clutch transmission service in Montreal catches failing clutch components before they leave a driver stranded and replaces them with commercial-grade parts built for the demands of heavy vehicle operation.
A commercial truck with an unreliable power system is a breakdown waiting to happen. We carry out battery diagnostics to assess charge capacity and health, handle charging system repair including semi truck alternator repair and truck starter repair, and make power reliability improvements so your truck starts and runs without electrical surprises.
Every transmission job starts with a complete gearbox diagnostic covering fluid condition, fault code scanning, shift performance testing, clutch assessment, and full driveline inspection before any repair is recommended.
We present our findings clearly with a transparent estimate before touching anything. You understand exactly what needs fixing and why before approving any work at our Saint-Laurent shop.
All transmission, gearbox, clutch, and driveline repairs are completed with commercial-grade parts and put through full drivetrain testing before your truck is returned to service.
Transmission work on a commercial truck demands accuracy from the first diagnostic through to the final road test. Our technicians work on heavy truck transmissions and gearboxes every day, which means they recognize problems quickly and repair them correctly without unnecessary guesswork. Every job at SS Auto Garage starts with a clear quote and ends with an invoice that matches it. Quality commercial parts, no hidden charges, and a truck that is properly tested before it leaves our shop.
Where We Serve
SS Auto Garage sits at 4775 Chemin du Bois-Franc in Saint-Laurent, providing truck transmission repair and commercial vehicle transmission repair across Montreal and surrounding areas. Whether you are an owner-operator or managing a commercial fleet, our central Saint-Laurent shop is accessible and ready to handle your drivetrain repair needs without a long detour from your regular route.
Highway 40, Highway 20, Highway 15, Highway 25, Highway 13
Saint-Laurent, Lachine, Dorval, Montreal-Nord, Verdun
H4S, H8S, H9P, H1G, H4G
FAQS
Watch for gear slipping, rough shifts, fluid leaks, burning smells, drivetrain noises, or fault codes on your dash. Book a gearbox diagnostic today.
Yes. We repair automatic and manual transmissions on all major commercial truck configurations using proper diagnostics and commercial-grade parts.
Yes. We handle emergency truck transmission services in Montreal. Call 514 609-4775 directly and we will advise on the fastest repair path available.
Yes. Our truck gearbox repair covers complete internal inspection, component replacement, and post-repair diagnostic testing before your truck returns to work.
Targeted repairs are done within one to two days. Full rebuilds take longer. We give you a realistic timeline before any work begins on your vehicle.
READY TO BOOK?
A transmission problem will not fix itself on the next run. Contact SS Auto Garage today for accurate diagnostics and reliable truck transmission repair in Montreal. Straight quotes, quality parts, and your truck back on the road.