1999 GMC Yukon "defrost" Questions

Hot air coming through defrost vent when the defrost is not on. I have seen this on GM vehicles before. If you take the temp selector and change it to the middle or to cool it will not let warm air go

rear defroster electricalreattach how would i re attach the rear defroster electricat cord to the rear window? you have to solder it back on the contact

2005 Defrost works great, but won't switch to other heating zones when changed (face, feet, combined face and feet) just continues to blow out of defrost vents. this is the default mode when HVAC have

heat comes out barley out the defrost but blows out at your feet why would that be heat,? and no year? wow. you didnt say, its it fully hot in any mode? is the heat 100% fully hot at feet. my cars ...

The rear wiper on my 2004 GMC Yukon quit working and about two weeks later the rear defrost quit working too. I have checked the fuses and they are ok. Any suggestions? The rear wiper worked ...

...When the directional control is set to feet, it is getting plenty warm, but as you move toward defrost/feet or tuen to defrost the air immediately goes cold. Also, the fan turns off on the ...

...help. i am used to gm's running closer to 210 or right under this is runnung alot lower. also rear defrost doesn't work. push the button and it clicks and lights up, but never melts anything. it's

cannot get the heat to come out on the floor no matter what position the switch is in. comes out on defrost only is this the blend door not moving. and will new actuator fix it. correct

rear wiper doesnt work rear wiper wont work, at all neither will the rear defrost could it be the switch? i would check the fuse panel

My 2001 GMC Yukon will not switch from defrost vents to face vents. It blows cold air through the defrost. bad Mode actuator, just above the gas pedal