1997 Pontiac Bonneville "cars ac heat comes hit" Questions

...heat. AC and fan works fine When turn on the defrost Ac comes on as when turn on the mode AC comes on .Turn off AC and hit auto and raise temperature but no heat. Any ideas would be appreicated ...

heat/ac randomly come on off together sometime everything works fine then i can hit a bump and all my gauges cut off but the lights still stay on and also my heating and ac cut off completely and dont

...heat no ac. Blower blows from dash vents only no defrost no foot no blend on vents no nothing. Compressor does not click on for defrost because it will not switch to defrost mode when I turn the vent ...

...Heat/AC doesn't work properly. My '04 Monte Carlo's heat went out at the beginning of the winter of 11. I could drive and hit a bump and it would come back on. Soon it would not ...

ac, all heat and air suddenly will not come out. No air will come out of any vents. You can feel it, if you cover it with your hand, but is very week. check the battery voltage, check the fuse for the

...heat comes out until I hit a bump in the road and it works. this problem is most commonly caused by either a sticky air temp control blend door or a defective blend door electric actuator, this door ...

heat in my car it makes a grinding sound. can you tell me if it is the ac compressor or could it be something else It's probably your blower fan. maybe a bad bearing. Unless you are using defrost, the

...comes on. it may stay like this days or months. is there a computer assoc with this system. i have been told that this system was only used a few years because it is a huge maint problem. no problems ...

heat or AC coming out of the vents when I have it set at 4. It will occasionally work, if I hit a bump just right, and it kicks on. But now it's been out for awhile now. If I'm reading this correctly-

...ac and heat not working I am not able to control the heat or a/c settings because the light for it does not come on, would that just be a fuse or is it something else, please help because my car is ...