0
The Expansion valve is located in the Right rear of the Yukon. The interior panels will need to come off to be able to reach the heating and air unit that the expansion valve is located in. Most of the panels have push in clips. I have a cool panel removing tool that slides in and you squeeze and it pops the clips out. Then you need to separate the airbox ( There are lots of clips and a few screws, some of the screws are in recessed holes) so make sure you have them all out . I had to unbolt the whole box to reach one screw that was located at the lower front near the wheel well. I did NOT have to disconnect the heater hoses from underneath to switch the valve. but the AC lines underneath of course needs to be disconnnected. it's best to pressure wash under your Yukon in the area underneath that you will be disconnecting the lines from as to not let any dirt and debri contaminate your ac lines. Also check and make sure your air doors are properly working while you have the unit exposed, This is easy to do their are two electric motor control actuators on the AC unit, Switch the heat control from hot to cold etc and the up and down controls from the drivers comp ( For the Rear Air and heat) and make sure their doing their job. The expansion valve is just below the blower motor. I took off alot of the components ( Like the electric actuators, blower motor and also slid out the heater core to be able to get the air box separated) also you will need to be patient with reassembly as the doors that the electric acuators operate will need to be lined back up so everything goes back together right. I was able to slide the whole evaporator out and the expansion valve is mounted on it. I flushed the evaporator out when I had it out.
This is quite a job but if you have some decent basic mechanical abilty you should be able to do it and save a ton of money.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Where is the ac expansion valve on a 2003 gmc Yukon?
I anwered this question Look at post ... "Where is Expansion valve located on 2003 Yukon Denali XL"
Location of rear Expansion Valve 2003 Dodge Durango?
It is on the evaporator, inside the vehicle, under the trim on the right rear.
Does the 2003 Nissan Frontier air conditioner have an orifice or expansion valve in the 3.3 liter engine?
The 2003 Frontier 3.3L has an expansions valve, its part of the evaporator.
Where is the EGR valve in a 2003 Kia Spectra?
location of egr valve on 2002 kia spectra
2003 Yukon Bose amplifier location?
under the cup holders it pulls right up
Where is the Rear ac expansion valve located in your 2003 GM?
The expansion valve is located on the rear evaporator core, typically in a casing located under one of the rear interior trim panels.
Location of throttle position sensor for 2003 gmc Yukon XL?
Right side of throttle body
Where is the expansion valve on a 2003 PT Cruiser?
The expansion valve is located inside the accumulator/dryer. It does not have a separate expansion valve like other cars. The PT Cruiser is classified by Chrysler as a Truck (probably because it gets such poor gas mileage - 18mpg city for a 4 cylinder), not a car. Trucks usually have an accumulator or a liquid line. If you believe the problem to be an expansion valve, replace the dryer.
Location of PCV valve on a 2003 Toyota tundra V8 4.7L?
by the motor+
2003 pcv location 4.8L?
left valve cover toward the rear
Where is the speed sensors located on a 2003 g m c Yukon?
Speed o meter stop working need to replace speed sensor. Need to fine the location of sensor on a G M C Yukon 2003
Find a spark plug location for a 2003 Chrysler Sebring?
Middle of the valve covers.
