Q: How to remove and install the control assembly in the instrument panel?A: Remove the four screws retaining the A/C switch to the instrument panel (Remove the screws retaining the control panel to the dashboard). Pull the A/C switch out of the instrument panel and disconnect the electrical connectors. Electrical checks of the blower motor speed switch are necessary. The speed switch, function selector, and blend-control switch can all be removed from the control panel (manual air conditioning) by pulling the knob off from the front side, removing the four screws retaining the printed circuit housing, then depressing the plastic tabs on the back of the switch to release it from the control panel. Installation is the reverse of the removal procedure.