Materials:
* Dexron III or IV transmission fluid (about 6 liters)
* New automatic transmission filter
* Automatic transmission pan gasket
* Flushing fluid for automatic transmission valve body (optional, but recommended)
* Tool kit: wrenches, screwdrivers, drain container
Steps:
1. Draining the automatic transmission fluid
* Raise the vehicle on a lift or place it on a level surface.
* Locate the automatic transmission pan located under the car.
* Unscrew the drain plug and drain the liquid into a container.
* Replace the drain plug and tighten it.
2. Removing the automatic transmission pan
* Unscrew the bolts securing the automatic transmission pan. The pan may be tightly attached and may require a rubber mallet to remove it.
* Carefully remove the automatic transmission pan and drain the remaining fluid.
3. Replacing the automatic transmission filter
* Inspect the old automatic transmission filter and, if necessary, replace it with a new one.
* Reinstall the new filter.
4. Installing the automatic transmission pan gasket
* Thoroughly clean the surfaces of the automatic transmission pan and transmission housing.
* Apply sealant to the automatic transmission pan gasket (follow manufacturer’s instructions).
* Reinstall the gasket.
5. Flushing the automatic transmission valve body
*If you are using flushing fluid, follow the manufacturer’s instructions.
* This usually involves connecting a flush fluid container to the external coolant line of the automatic transmission and running the engine for a while to circulate the flush fluid through the valve body.
* Drain the flushing fluid.
6. Filling the automatic transmission with fluid
* Reinstall the automatic transmission pan and tighten the bolts.
* Fill the automatic transmission with fresh transmission fluid through the oil filler tube on the transmission housing.
*Use a funnel to make pouring easier.
7. Checking the fluid level
* Start the engine and warm it up to operating temperature.
* Shift the gearshift lever to each position and return to the park position.
* With the engine off, remove the automatic transmission fluid level dipstick.
* Check the fluid level. It should be between the “Min” and “Max” marks on the dipstick.
8. Adding liquid
*If the fluid level is low, add a little extra fluid through the oil filler tube.
* Check the fluid level again. Repeat the steps until the level is correct.
9. Reset automatic transmission adaptations
* After flushing the valve body and replacing the fluid, it is recommended to reset the automatic transmission adaptations. This can be done using a diagnostic scanner.
Notes:
* Use only transmission fluid recommended by the vehicle manufacturer.
* Make sure all nuts and bolts are properly tightened.
*If you are not experienced in servicing your transmission, it is recommended that you take it to a qualified mechanic.