Take off the two 13mm nuts that hold the wiper arms on.......take the arms off.....remove all the torx screws on the cover above the wiper....unbolt the wiper transmission and unplug the motor.........you can buy a whole new assembly on ebay or just the motor, but if you just replace the motor, you might have to play around with the transmission assembly for a while to get the arms to stop right again. It's not a hard job. If you get a used transmission assembly, make sure they send you one with good splines on it....the part that you put the arms on.....if they are too worn, your amrs will slip....you might want to buy a haynes repair manual...see page 12-13 for the procedure to park and mark the frame.....