1993 GMC Jimmy Owner's Manual - Page 149

Comfort Controls KO506 Yourvehicle'sflow-throughventilationsystemsuppliesoutsideair to theinside will flow ofyourvehiclewhen it is moving,Withthesidewindowsclosed,air into the front air inlet grilles, through the vehicle, and out the rear air exhaust valves. Outside air wl also enter the vehicle when the heater i or theair conditioningfanisrunning. Ventilation Tips Keepthe hood and frontairinletfreeofice,snow,oranyother obstruction(suchasleaves).Theheateranddefroster will workfar better,reducingthechanceoffoggingtheinsideofyourwindows. Whenyouenteravehicle in coldweather,turntheblowerfanto a fewmomentsbeforedriving off. This helps clear the intake ducts snowandmoisture,andreducesthechanceoffoggingtheinsideof your windows. Keeptheairpathunderthefrontseatsclearofobjects.Thishelpsair to circulate throughout your vehicle. HI for of 3-3