Suburban rear A/C expansion valve location?

[1badgmc]

I was just getting to that, do you need any other info?

No. I'm mostly concerned with the "where."

Also, in your last post there, it shows the orifice tube to be in that line behind the firewall. We looked in that area and noticed the line was dimpled like it was meant to hold an orifice tube. We put the orifice tube in the line by the evaporator core just like on pickups, but there wasn't one in there to begin with. So are the Suburbans not supposed to have one there and have it instead in the location of that diagram or should it be in both?

 

[DRAGGIN95]

I had to change the one on our 99, and it was at the junction in the engine compartment behind the core support lik in the pic.

 

[DRAGGIN95]

Also our burb also didn't have one behind the grille like the truck's do, I found that out the hard way, I just assumed it was the same and unbolted the lines and it wasn't there, then I started searching.

 

[1badgmc]

Well, crap. That explains why that line was empty. I'll have to move it, then. Off with the grille again, dammit.

 

[DRAGGIN95]

I know the feeling!

 

[DRAGGIN95]

If you need any other info on your burb just let me know.

 

[1badgmc]

So this illustration is the blower motor and everything inside the rear, right? So where in the illustration is the expansion valve? The picture is small and hard to see. Pick a number...

You must be registered for see images

If you need any other info on your burb just let me know.

Will do.

 

[Sierra]

This stuff will help on my burb as well. i need to get the a/c working real soon. I have also replaced the compressor, accumulator, and front line set and the thing still leaks all the freon out.

 

[DRAGGIN95]

This stuff will help on my burb as well. i need to get the a/c working real soon. I have also replaced the compressor, accumulator, and front line set and the thing still leaks all the freon out.

Yeah I don't know why it has been such a pain.

 

[DRAGGIN95]

Evaporator Core Replacement - Auxiliary (Suburban/Yukon XL)
REMOVAL PROCEDURE

You must be registered for see images

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

1. Disconnect the negative battery cable.
2. Recover the refrigerant. See: Refrigerant\Service and Repair
3. Remove the rear quarter interior trim, as necessary.
4. Remove the right rear quarter trim panel.
5. Remove the right rear wheelhouse.
6. Disconnect the rear heater hoses from the auxiliary heater core (7), if equipped.
7. Disconnect the auxiliary refrigerant hoses from the auxiliary evaporator (6).
8. Disconnect the electrical connectors, as necessary.

You must be registered for see images

1. Complete the following steps in order to remove the heater/evaporator case cover:

9.1.Remove the case clips.9.2.Remove the 11 screws.9.3.Separate the case halves.

1. Remove the pipe insulator.
2. Remove the evaporator core.

INSTALLATION PROCEDURE

You must be registered for see images

1. Install the evaporator core.
2. Install the pipe insulator.
3. Install the heater/evaporator case cover clips.

You must be registered for see images

1. Install the blower motor (2) to the case.
2. Install the auxiliary case to the vehicle.
3. Connect the auxiliary refrigerant hoses to the auxiliary evaporator (6).
4. Connect the rear heater hoses to the auxiliary heater core (7), if equipped.
5. Connect the electrical connectors, as necessary.
6. Install the right rear wheelhouse.
7. Install the right rear quarter trim panel.
8. Install the rear quarter interior trim.
9. Connect the negative battery cable.