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2006 gmc sierra no heat just cold air blowing

Switch levers to full heat blower on low or high dosent matter no heat just cold air comming out

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 62 Answers

SOURCE: The air conditioner on the

its the actuators,take to shop tell them to replace.

Posted on Jul 27, 2008

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honeymokey
  • 3113 Answers

SOURCE: air blend door

Replace the broken actuator.

Posted on Apr 15, 2009

alicantecoli
  • 22219 Answers

SOURCE: a/c and heater only blow air out of defrost

either a vacumn pipe is broken or the ends split so its not passing a vacumn to open the flaps,where they are and how to get to them i cant help because i have never worked on one as they are not here in spain.check the engine end first though .Look for some small rubber pipes running from the inlet manifold

Posted on May 30, 2009

ministock48
  • 258 Answers

SOURCE: 1996 GMC blower motor only works on high speed.

more than likely yes the resistor

Posted on Oct 22, 2009

  • 172 Answers

SOURCE: 2005 GMC Sierra 1500 - heater blows, but only cold air

Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.

Posted on Jan 07, 2010

Testimonial: "You were absolutely correct. Low coolant level. Put in some 50/50 and we're nice and toasty now, but need to find out why coolant was so low. Thanks."

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2 Answers

2005 GMC Sierra heater blowers work fine but only blows cold air until you start into a good continuous acceleration. It blows cold though no matter how long the truck sits idle after cranking. Never done...


check the coolant level in radiator. if its low it will only circulate while driving, and not while idling. May also be a bad water pump. See a professional for that.

Nov 08, 2010 | 2005 GMC Sierra

1 Answer

I have a 2006 GMC sirrea 1500 pickup for about three weeks my air condiction it come then when it gey it turn off is it the blower motor?


if you do not hear the blower motor blowing it is possible. If it moves air but isn't cold the it would be in the compressor but if it doesn't move air at all id be inclined to say that yes it is the blower motor.

Aug 26, 2010 | 2006 GMC Sierra

2 Answers

My 2000 gmc sierra 4X4 suddenly quit blowing cold air. The recirculating light is on, blower is fine. In the fuse box there are several small fuses that are ok. I'm hesitant to pull the larger fuse, as I...


Not blowing any air , hot or cold ? blower is fine ???? How do you know the blower is fine if not blowing any air ? Doesn't work any speed ? High , low , med. Blower motor , resistor or relay . Watch this video ! Do you have a volt meter , know how to test automotive electrical circuit's ?
Blower Motor Problems Auto Repair Help
Free wiring diagram here http://www.bbbind.com/free_tsb.html Look for the correct fuse's for the blower motor .
Enter vehicle info. year , make , model and engine size. Under system click on HVAC ,under subsystem HVAC controls will pop up automatic. Click search button then first blue link . Look at diagram to see which fuse is for the blower . Test voltage with volt meter

Oct 05, 2017 | 2000 GMC New Sierra 1500

2 Answers

2005 GMC Sierra 1500 - heater blows, but only cold air


Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.

Jan 07, 2010 | 2005 GMC Sierra

2 Answers

Heat will stay on high until turn engine off and back on


check dial switch, check valve that lets water run through heater core

Aug 23, 2009 | 2000 GMC New Sierra 1500

1 Answer

Blower motor problems/ac problems


List of possibilities :
blower motor
resistors
switch(On/OFF)

May 18, 2009 | 2006 Chevrolet Trailblazer

2 Answers

Blower dosent blow on high


fan blower speed switch under hood usually in fire wall or in heater box under dash area if you do not change it you will keep losing all your speeds until nothing left! it is not!!!!the one in your dash that you hand operate! hope this helps.John

Jan 24, 2009 | 2006 GMC Envoy

2 Answers

Air conditioning and heating controls


heater is unpleged cheak with car heater is pulged are unpleged

Jun 06, 2008 | 2002 GMC Sierra

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