Transmission & Gearbox Repairs

Trusted Automotive Transmission & Gearbox Repairs in Gladesville

At CMN Motors, we specialise in providing expert transmission and gearbox services for all types of vehicles. Our skilled technicians have the knowledge and experience to handle any transmission-related issues, ensuring your vehicle operates smoothly and efficiently.

Automatic Transmission Services

When it comes to automatic transmissions, no one does it better than CMN Motors. Our transmission experts are well-versed in diagnosing and servicing transmissions to ensure optimal performance. Whether your vehicle requires a fluid change or a more comprehensive service, you can trust us to do the job right.

Reseal Service

If your automatic transmission is experiencing fluid retention issues without any other driveability problems, our CMN Motors Reseal Service may be the solution. Our reseal service includes the following steps:


  1. Removal of the transmission from your vehicle and disassembly as necessary.
  2. Replacement of all external seals and select components by our expert technicians to address the fluid retention problem.
  3. Reinstallation of the transmission, refill with fresh and clean transmission fluid, and adjustment of any external components.
  4. Thorough road testing to ensure proper functionality.


With our reseal service, your vehicle will be ready to take you anywhere you need to go with confidence.

Transmission Service

No matter what type of vehicle you drive, be it a car, 4WD, manual, or automatic transmission, we have the expertise to service your transmission. Our comprehensive transmission service includes thorough inspections, fluid changes, and adjustments to keep your transmission in excellent condition.

Clutch Service

Our skilled technicians also provide clutch services for vehicles equipped with manual transmissions. If your vehicle's clutch is experiencing issues that cannot be resolved through external adjustments or repairs, we will perform a detailed inspection. Our clutch service includes the following steps:


  1. Removal of the transmission.
  2. Inspect the clutch disc, pressure plate, flywheel, and related components.
  3. Replacement of any required components to meet our exacting standards.
  4. Reinstallation of the transmission and refill with fresh fluid.
  5. Performance of a lift check to ensure proper clutch installation and adjustment.
  6. Thorough road testing to ensure optimal clutch operation.


With our clutch service, your vehicle will be equipped with a reliable and properly functioning clutch, allowing you to drive confidently for many miles.

Contact us at 02 9808 2367 and experience our top-notch transmission and gearbox repair services!

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