Hard shifts, slipping gears or a transmission fault code can stop your truck from earning money. Polstar Truck Repairs diagnoses and repairs manual, automatic and automated manual (AMT) transmissions on heavy and medium duty trucks.
Modern AMTs are controlled by computers, so many problems start with a sensor, a software fault or low air supply rather than the gearbox itself. We run a full diagnostic first so we can find the real cause, and we'll never recommend a rebuild if a smaller repair fixes the problem.
From clutch replacements to driveline repairs, we'll explain what's wrong, what it will cost and how long it will take before we start.
Don't wait for a breakdown. Bring your truck in if you notice any of these:
Grinding, clunking or a long pause before the gear engages means the transmission needs attention.
If the engine revs but the truck doesn't pull, the clutch or transmission may be slipping.
A transmission fault on the dash, or the truck getting stuck in one gear, needs a diagnostic scan.
Oil under the transmission or a burning smell can lead to overheating and internal damage.
New noises in neutral or while driving often point to worn bearings or gears.
Vibration that changes with speed can come from a worn driveshaft or U-joints.
We work on trucks from all over Ontario, plus long-haul trucks from across Canada and the US passing through the GTA. Bring your truck to our Mississauga shop for transmission services.
Yes. We diagnose and repair AMTs as well as traditional manual and automatic transmissions. Many AMT problems are electronic or air-supply related and can be fixed without a rebuild.
Common signs include slipping under load, difficulty getting into gear, a clutch pedal that feels different, or a burning smell. We'll inspect it and let you know whether it needs adjustment or replacement.
It depends on the transmission and how the truck is used. Follow your manufacturer's schedule, and we'll check the fluid condition at each preventive maintenance service.
Yes. After a diagnostic and inspection, we'll explain whether a repair, a rebuild or a replacement makes the most sense for your truck and budget.
