Check the owner’s manual for the correct transmission fluid type and service interval
Park on a level surface and let the engine cool
Set the parking brake and chock the wheels
Raise the vehicle safely if needed and support it with jack stands
Locate the transmission drain plug or pan
Place a drain pan under the transmission
Remove the drain plug or loosen the pan bolts to drain the fluid
Remove the transmission pan if required
Clean the pan and magnet
Replace the transmission filter if applicable
Install a new pan gasket if needed
Reinstall the pan and tighten bolts to the specified torque
Reinstall and tighten the drain plug if used
Lower the vehicle if it was raised
Add the correct amount of new transmission fluid through the dipstick tube or fill port
Start the engine and shift through all gears
Check the fluid level with the engine running and adjust as needed
Inspect for leaks
Dispose of used transmission fluid properly