Question about GMC Suburban

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03 gmc, climate controls at 15 blow cold air at 16 hot air, no happy medium, how do you calibrate setting at 16 trough 32 is same.

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  • 22 Answers

Check the heater control module

Posted on Jan 01, 2014

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Posted on Jan 02, 2017

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SOURCE: climate control 04 yukon denali

Removing the fuse for a few minutes and turning the controls on both driver side and passenger side to the highest setting and then turning them down slowly until the system started cooling has worked for me. Thanks for the suggestions---saved me $2500.00 on a useless dealer estimate to fix problem. These dealers are dangerous---they were the ones that caused my problem when they unhooked the battery while replacing my ignition switch.

This is a good forum.

Posted on Aug 12, 2008

emissionwiz
  • 75077 Answers

SOURCE: my air blows hot even tho my climate control is on cold

U have a stuck air temp control blend door, either the actuator motor is defective or the door is warped and has jammed, one thing is that u must remove the dash to rcheck replace these parts.

Posted on Mar 10, 2009

  • 1 Answer

SOURCE: AC Blows cold then hot

I had this happend to me on my 2004 2500 in july in S.C.I turned the key off and on 5-6 times and i have not had that problem again.

Posted on Apr 19, 2009

  • 5 Answers

SOURCE: Only cold air on passenger side

I would first check and make sure that you have enough Freon in the system, on climate control dual systems only one side will put out cold air if the system is low on Freon. Eventually, both sides will put out warm/hot air if the system continues to loose Freon. As with all leaks the system should be checked and then the leak causing component replaced/repaired.

Posted on Jun 10, 2009

  • 54 Answers

SOURCE: 2004 chevy tahoe, dual climate control, blowing different temps

Its more then likely the temp door broken or temp door motor broken/stuck. There is 2-3 of these motors under the dash on the side of the evap/heater core box. Some require extensive labor to replace, good luck

Posted on Jul 29, 2009

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NO HEAT. A/C works fine. Air blows but no warmth. blows cold air for front defog and cold air blows when temp cranked high 1-5


warmth comes from the heater in the car
if it is climate control check the climate control module
check for heater control in the vent settings as the hot water tap may not be turning on

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If you have owners manual check that your climate control settings are as you expect them to be, if that makes sense. Some on Fixya do not realise they gave climate control , they think they have normal A/C and try to correct chimerical problems. Please check and repost

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Hot to cold air in 1999 GMC Envoy


heater core plugged. remove heater hoses, use tap water to flush out core..

Jan 17, 2013 | 1999 GMC Envoy

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My climate control only blows out cold air but the rear climate control works as it should


Could be the controller or a faulty blend door.
The blend doors direct air thru the heater core and evaporator along with the vents. The controller uses electric motors to change the direction of air flow.

Sep 28, 2012 | 1999 GMC Suburban

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Where is the blend door actuator located on 03 Hummer h2. Driver side blows cold, passenger side blows hot


They are not vac on the h2. there is 2 for temp control, one for recirc and one for blend. check the hummer forum as there is a great read for it there. the driver side actuator is really ez as it's under the glovebox, 20 min fix. the rest take removing the whole dash but it's not that tough.

Jan 10, 2012 | 2003 Hummer H2

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MY A/C IN MY 2005 GMC 2500 HD BLOWS COLD WHEN I TURN IT ON THEN IN ABOUT 15 SECONDS IT BLOWS HOT. WHAT IS THE SOLUTION?


This can be a faulty temperature control unit in the panel as it fails to keep control of the settings . If so please try and reset the control from HOT to COLD many times and see if there is any change.
If there is a electronic temperature control- auto climatic control - then this can be a suspect.
Also you must check if the AC cuts off in this condition, check the gas pressure in the display or if the cooling pipes are getting hot. If so the AC must be checked, check the gas , check the presssure switch , the compressor pumping pressure, block in the evaporator.
Thank you for using fixya

Sep 21, 2011 | GMC Sierra 2500HD Cars & Trucks

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The A/C unit is not blowing cold air in the front. The back is blowing cold and we have re-filled the unit. Still is blowing HOT air?


your split manifold located on the firewall that sends and directs the refrigerant from the front and rear depending on your setting on the dash is plugged or the climate control on the dash is not responding and there could be a fuse,relay,broken wire,but there cant be a leak or either side wouldn't cool

Apr 23, 2010 | 2003 GMC Yukon XL

1 Answer

2005 Tahoe-just installed new battery, driver side air blows hot while passenger and rear air blow cold.


you have lost A/C and heater calibration , disconnect the battery for 10 minutes then hook back up start the truck turn the climate control back on do not touch any other button for 5 to 6 minutes let the ecu reprogram then set your temp setting and it should work fine

Jun 06, 2009 | 1998 Buick Regal

1 Answer

My air blows hot even tho my climate control is on cold


U have a stuck air temp control blend door, either the actuator motor is defective or the door is warped and has jammed, one thing is that u must remove the dash to rcheck replace these parts.

Mar 10, 2009 | GMC Sierra 1500 Cars & Trucks

3 Answers

Only cold air on passenger side


I would assume with multiple people having the same problems, there should be a service bulletin on this issue. may want to call dealer with vin # to verify. sounds like a heater control issue under the dash. something i would leave to the experts for repair

Jul 06, 2008 | 2003 Buick Rendezvous

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