First, cut off the negative cable from the battery, then lift the vehicle using a hoist. Detach the wire connector from the reservoir pump and from the washer hose on the pump. Gently pull the pump from the grommet and the reservoir without touching or harming the reservoir and set the rubber grommet aside. If just replacing the pump, get rid of the old grommet; but if you're just replacing the reservoir, keep the old one. Remember to use a new grommet, place it in the reservoir, set the pump in position and snap it down without any cuts to the reservoir. Connect the pump's hose to the washer, add the water to the tank and then reconnect the wire from the pump to the reservoir. Take the vehicle down from the hoist and attach the cable from the battery's negative terminal.