How do you change the washer pump on the 2009 Buick lacerne?

To change the washer pump on a 2009 Buick Lacrosse, first, ensure the vehicle is off and the hood is open. Disconnect the negative battery terminal, then locate the washer fluid reservoir, which is typically found near the front of the engine bay. Remove any necessary components to access the pump, disconnect the electrical connector and the fluid hoses, and then unscrew or unclip the old pump from the reservoir. Install the new pump by reversing these steps, ensuring all connections are secure before reconnecting the battery.