1999 Pontiac Bonneville Owner's Manual - Page 148

First Edition for Pontiac Bonneville Owner's Manual - 1999 yellowblue Comfort Controls This section tells you how to make your air system work for you. Your comfort control system uses ozone-friendly R-134a refrigerant. With these systems, you can control the heating, cooling and ventilation in your vehicle. Your vehicle also has a flow-through ventilation system described later in this section. Fan Knob The left knob is the fan knob and selects the force of air you want. Turn the knob clockwise to increase fan speed and counterclockwise to decrease fan speed. The fan will always run unless the right control knob is turned to OFF. The fan must be on to run the air conditioning compressor. Temperature Knob The center control regulates the temperature of the air coming through the system. Turn it toward the blue area for cooler air. Turn it toward the red area for warmer air. Mode Knob Standard Climate Control System H-23-4002-S The right control has settings for air conditioning and non-air conditioning modes. The mode control allows you to choose the direction of air delivery. MAX: This setting provides maximum cooling with the least amount of work. MAX recirculates much of the air inside your vehicle so it cools quickly. The air is directed through the instrument panel outlets. 3-2