1993 GMC Suburban Owner's Manual - Page 152

.. . . . K2313 Yoursystemhasalighteddisplayshowingeachsystemwhen it is operating. Duringnormaloperation, all thelightswon'tcomeonatthesametime.Only ,the ones displaying the current settings will light. System Comtrds N Button: Press the button marked IVC to turn your air conditioner on and C off.' The N symbol wl light on your display and air C i wl comeoutof your i dashboard vents. The fan will automatically be set on LOW. ' . .When you press the N .button to turn the air conditioner off, the system wl C i operate in theventmode.Whenyouturntheairconditibnerback-on,the .. system will operate in the mode that you last selected unless 'the OFF button waspressed. OFF Button:Pressthisbuttontoturntheair conditioning heating system off. Pressing OFF will erase the present mode of 'operation from the system's memory. Outside air. wl still come out of the heater outlet whenever the i vehicle is movingforward. I the OFF buttonwaspressed,youmustpress f NC, MAX, orone of the BLEND buttons for the system to come back on. Air contfoIs (BLEND) The two buttonstotheright of thesystemdisplaycontroltheairflow.You can blend the air flow to suityourneeds.Theamountofblending is shown onthedisplay by an arrowmovingbetween the figure'sfeet(floorairflow) and head (vent air flow). 3-6