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LC Smth Posted on Sep 25, 2018
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Rear air blows cold air, when heat is on. Could it be the orifice tube? 2002 GM Yukon

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Jeff Armer

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  • GMC Master 15,575 Answers
  • Posted on Sep 25, 2018
Jeff Armer
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Joined: Nov 22, 2012
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No it's not the orifice tube. Temp . actuator , electrical motor that switches door inside rear HVAC system from heat to A/C . stuck on A/C . Rear auxiliary heat and actuator overview repair for Yukon Tahoe Suburban...

5 Related Answers

Anonymous

  • 2920 Answers
  • Posted on Jan 26, 2009

SOURCE: 2002 GMC Yukon blows cold air from the front, rear works fine

check you antifreeze level and make sure its full

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Anonymous

  • 12 Answers
  • Posted on Jan 30, 2009

SOURCE: rear heat in 2006 yukon blowing cold air

locate the rear heater hoses, make sure eng is at operating temp.
fill of the 2 hoses , should be worm tot he touch, if one is hot and the other is luke warm, the problem is in the circulation in the rear heater core. thanks and good luck . let me know.
kindest regards Bill ps. don't over look the fan speed at the rear core.

Anonymous

  • 3 Answers
  • Posted on Jul 25, 2009

SOURCE: REAR A/C NOT BLOWING COLD ON 1997 CHEVY VENTURE VAN

It is the expansion valve. It is in the rear behind the left rear tire. It is gold in color and in route with the ac lines. Guaranteed fix.
Good luck

Anonymous

  • 26 Answers
  • Posted on Mar 04, 2011

SOURCE: i have a gmc yukon , front a/c works fine, thou

you have a seperate peice for the rear air in the side panel in the very back of truck that either needs freon or replaced if thats the case you need to take it some where that knows how to change it but when my friends went out it was expensive to have it fixed

Anonymous

  • 1 Answer
  • Posted on Jun 30, 2012

SOURCE: 2002 grand prix gt 3800 blowing hot air on AC.

i need to know how much the relate box and wire and hares is for the ac on a grand prix 2000

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Related Questions:

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2answers

2002 gmc yukon xl rear heat blows heat front blows cold air

Try to back wash the heater core first if it doesnt work then its clogged up try to turn the heater on the front with the heater off for the back keep an eye on the temp guage if it goes up than normal then its clogged....

Fyi u have to run the engine for awhile with the heater fan on
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2002 gmc yukon xl rear heating problems

There is a climate control module in the head liner of that vehicle. IT needs to be checked or replaced
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2002 taho location of orifice tube, ft and rear systems

I would check the low and high readings with a gauge set first.
Its possible the compressor has failed internally.
If the orifice is plugged up one of the lines should be cold where the freon gas is concentrated.
The fan clutch is working ok, right ?
I'm showing an orifice tube in the front and an expansion valve in the back, so its doubtful both would fail at the same time.
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Front ac is blowing cold air but rear ac is blowing hot what is problem

More than likely this is the rear orifice tube(or rear metering block) same concept.This invloves evacuating the ac and removing the orifice tube and repl;acing it.This is just normal maint that is accustomed to this vehicle.Please get back to me with any more questions...thanks!!!
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Rear heat wont work for 2003 yukon denali, and driver side heat seater only works for about 2 seconds

Hey i found a link for you with step by step pictures and literature on how to fix this problem. Apparently it's a common thing with yukon/tahoes. Web site; http://www.fullsizechevy.com/forums/general-discussion/technical-maintenance/313280-tahoe-rear-air-has-no-heat-just-blowing-cold.html. Good luck, hope i helped.
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Airconditioner only blows a/c in the back not front - the front just blows air - not hot or cold 2003 yukon xl

I'm going to assume that is on both sides of the cab? I'm going to say you have an actuator problem, if it's in fact only blowing cold in the rear, and not in the front. The actuators are prone to problems on the gm product lines. Even more with a weak battery.
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2002 GMC Yukon blows cold air from the front, rear works fine

check you antifreeze level and make sure its full
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AC 2002 Ford Taurus SE

I believe the orifice tube on this model requires the a/c pipe to be cut to install a new tube. You need to discharge the system, replace the tube, then evacuate miosture with a vacuum pump, then recharge with R134A refirgerant. Not a job for a non technical person.

The oriifce is in the line just before the evaporator that is in your car a/c heater case. It is where the liquid refrigerant turns into a vapor as it comes out of the orifice and then it absorbs heat from the air going into you car, thus blowing cold air. Moisutre in the warm air condenses and as he iar gets cold and it drains out of your evaporator and out the drain & onto the ground
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