How do you change transmission fluid on 2003 Oldsmobile Alero?

To change the Transmission Fluid on a 2003 Oldsmobile Alero, first, ensure the vehicle is parked on a level surface and the engine is off. Remove the transmission pan bolts and carefully lower the pan to drain the old fluid, then replace the filter if applicable. Clean the pan and gasket surface, reattach the pan with new fluid, and fill the transmission with the appropriate type of new fluid through the dipstick tube. Finally, start the engine and check the fluid level, adding more if necessary.