Where is the rear orifice tube located in a 2005 GMC Yukon XL. The AC is not blowing cold air. I checked the orifice tube in the front to make sure it was not clogged, now I want to check if there is a orifice tube for the rear of the truck but I don't know where it is located.
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My problem in my 2004 chevy tahoe is that it will not blow out of the dash or ... onto the vent door gears ...
forums.edmunds.com > Chevrolet > Chevrolet Suburban
Jul 20, 2010 - 30 posts - 16 authors
I just don't get why that doesn't work right in the first place. ... I have 99 Yukon that has a problem with the front air. .... $55,000 for my GMC, I guess expecting cold air when we push A/C and getting 90 degree blast ... 2001 Yukon XL 1500 Front heat & air fine, rear ac blows hot as if heater is on in all settings.
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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
CYCLING SWITCH IN THAT YEAR MODEL IS USUALLY LOCATED IN THE COMPRESSOR ITSELF,USALLY HAS A 1 wire button type wire connection on top of compressor. it's held in by a snap ring
the most common problem here is a defective air temperature control blend door actuator, this is what moves the door that controls air flow across the heater core or the ac evaporator core, to replace this requires u remove the dash assembly.
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