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2006 silverado defrost not working - Silverado 1500 Chevrolet Cars & Trucks

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1 Answer

Ac unit


Faulty heater blend door.

Aug 23, 2012 | 2006 Chevrolet Silverado 1500 2WD

1 Answer

My truck was only blowing out through the defrost, replaced the blend door motor. now when in park all the modes work (vent, floor, defrost) when I put it in gear and drive for about 1/4 mile it goes...


CHECK THE ROD ON THE BLEND DOOR YOU WILL PROB. FIND EITHER THE BAR IS MENT OR THE CLIP ON THE FAR END IS BROKEN OR COME OFF AS THIS CLIP IS PLASTIC

Aug 02, 2011 | 2006 Chevrolet Silverado

2 Answers

02 SILVERADO. AIR ONLY BLOWS OUT DEFROST VENTS. REPLACED CONTROL PANEL. NO LUCK


I had a similar issue on an 05 silverado. Air would only blow out of defrost vents. But this worked for me:

1) Unplug HVAC fuse for 10-30 seconds
2) Start truck
3) A/C comes out defrost - wait about 10 to 15 secs
4) A/C then starts coming out the floor vents for about 5 seconds
5) A/C then starts coming out the dash vents.
6) While the A/C is coming out the dash vents, turn A/C OFF (otherwise it cycles back to defrost for good).
7) Turn truck OFF
8) Restart truck and it should work fine

(Found solution on another forum from user "ccurran")

May 15, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

Heater lines both hot on the passanger side in aout out seem to be exchanging in and out hot water , nothing in he cab no heat floor vents or defrost???? ther is also a plug handing in ther...


If both hearer hoses are hot, then I would be looking for a problem with a temp door not working. Possible you have an actuator not working

Sep 04, 2010 | 2006 Chevrolet Silverado

1 Answer

On my sons 2000 chevy silverado 4.8 liter....the heater works fine....but when i switch control to defrost....only cold air blows out defrost vents....any help would be appreciated.


the heater & defroster baffles are controlled by electic motors that open and close the baffle (doors) to let the air to the heater and defroster vents. the motor must be bad

Jan 12, 2010 | 2001 Chevrolet Silverado

1 Answer

'06 Silverado 4.8L Air Vents selector does not open and close any vents anymore. Stuck in the Defrost/Feet position.


Look for vacum hose under hook going into fire wall, check for vacum if none add vacum or look for vacum hose hanging some where and reconnect.

Dec 17, 2009 | 2006 Chevrolet Silverado 1500 2WD

1 Answer

IS THERE A CABIN FILTER ON MY 2006 CHEVROLET SILVERADO ?IS THIS WHY WHEN MY TRUCK IS CLOSED UP IT SMELLS LIKE MOLD OR MUSTT.AND WHEN I TURN ON MY HEAT AND DEFROST?


There are none on the 2006. There might be some moisture that entered the carpet in the vehicle at some time or another and caused a moldy or musty smell. There are several different air fresheners that can be added to the interior under the seat and in the carpets to help make is smell better.

Dec 04, 2009 | 2006 Chevrolet Silverado

1 Answer

Defroster & floor blowers don't work but front facing vents do


There are what they call mode door's these days they have a electrical motor that turnes the door to different posistions...sounds like yours is become broken. It would depend on your expertise in the ac & heating system area to replace the part. Sometimes easy and most of the times the dash has to be removed.

Feb 12, 2009 | 2002 Chevrolet Silverado

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