How do you change corsa c heater matrix?

To change the heater matrix in a Corsa C, start by draining the coolant from the system. Remove the dashboard and the center console to access the heater matrix located behind the dashboard. Disconnect the hoses from the matrix, remove any mounting screws, and take out the old unit. Install the new heater matrix by reversing these steps, ensuring all connections are secure before refilling the coolant.