Question about 1996 GMC Jimmy

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My defroster is blowing out hot air but not defrosting my window

It will not defrost my front windshield

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Bizarre. It is blowing hot air? If so are there vents you can change direction towards windshield?

Posted on Dec 29, 2008

2 Suggested Answers

  • 1752 Answers

SOURCE: When the defrost is on in rainy weather, it blows

Yes, that's the way it works.

Posted on Oct 19, 2009

emissionwiz
  • 61037 Answers

SOURCE: Front defrost vent doesn't blow any hot air.

You may need to replace the mode selector switch.

Posted on Nov 04, 2008

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2008 RAV4 defroster doesn't clear windows at temps below freezing


front or rear defrost?
what windows, there are many, front windshield?????
front:
dont use RECIRC mode. use fresh air, only
and make sure the dampers are in fact sending hot air to the windshield. if the dampers are not working it needs service
or a simpled blown fuses in the fuse box.
also, the car can have water engress. are the any damp spots
on the carperts. anywhere.?
are you using the A/C defrost mode, does it work.
do you know how to tell, its easy, check A/C mode.
A/c is also a dehydration system for the whole cab, it even ejects
water to the ground as you drive.

Jan 18, 2014 | Toyota RAV4 Cars & Trucks

1 Answer

Defrost will not defrost my windshield


You do not mention the type of car you have. If you have air that blows out the defroster and panel vents you should have defrost. Do you smell a sweet odor coming from the car? This could be antifreeze leaking though the heater core. This will cause your windshield to remain foggy.

Nov 13, 2013 | Eagle Cars & Trucks

1 Answer

My 2006 jeep Liberty Front Defrost blows cold air. When I turn on the heat every vent blow hot air, except the front defrost and it blows cool air...any suggestions?


Sounds like defrost door on heater box is not work You need to get under dash and check controls on the box. Good luck

Dec 08, 2010 | 2006 Jeep Liberty

2 Answers

1988 BMW 735I Defroster blows hot air... I getting a sunburn


The Heater Control Valve has failed. It defaults to full defrost mode when it fails and blows hot air even when the A/C runs. Replacement part is $105 ...google Autohaus AZ for online parts ordering. BTW...HCV is located in the engine compartment right in front of the driver position in the corner by the firewall and inner fender...you'll see small coolant hose running to it.

Feb 10, 2009 | 1993 Mercedes-Benz 190

1 Answer

Heat wont blow through heater or defroster vents


common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Jan 18, 2009 | 1997 Chevrolet K1500

1 Answer

Front defrost vent doesn't blow any hot air.


You may need to replace the mode selector switch.

Oct 18, 2008 | 1998 Ford Taurus

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