Fluid Drainage: The first step is draining the old transmission fluid from the system. This is typically done by removing the transmission fluid pan or accessing the drain plug, depending on the vehicle's design.

Filter Replacement (if applicable): Some vehicles have a transmission filter that also needs to be replaced during the fluid change. The filter helps to remove contaminants from the fluid and should be inspected and replaced if necessary.

Fluid Refill: After draining the old fluid, fresh transmission fluid is added to the system. It's crucial to use the type of fluid specified by the vehicle manufacturer to ensure proper operation.

Seal Inspection: During the service, the technician may inspect the transmission seals for signs of wear or damage. Seals that are worn or leaking may need to be replaced to prevent fluid leaks.