Automotive Air Conditioning Information Forum (Archives)

Cussboy on Tue June 08, 2010 11:42 PM

Year: 1994
Make: GMC
Model: Suburban

Here's the issue: under the passenger side, a heater hose connection is leaking, has a special type of quick-connect to one of a pair of metal lines that go to the rear heater. That's where it's leaking; I don't need rear heat. Can I just break off that funky "quick disconnect" and cap off the metal lines somehow?

Edited: Tue June 08, 2010 at 11:44 PM by Cussboy

TRB on Wed June 09, 2010 6:52 PM

I think you would be fine unless this is looped system. Not sure on that so best to wait for GMtech or one of the others.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

GM Tech on Wed June 09, 2010 7:17 PM

Yes- however you want to cap it off won't hurt a thing...

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

Cussboy on Tue June 15, 2010 12:29 AM

I am such a stupid !!! Instead of doing this myself, I took it to a shop, and they bypassed both rear and front heater cores. I told the guy, and the paperwork said to bypass the rear heater core, so shop manager will make good, but I need to take it back. Note to self: do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!! do it myself !!!!

Cussboy on Thu June 24, 2010 10:58 PM

OK, located the right 3/4 inch i.d. U-shaped molded hose for this, and got it. Can bypass under the passenger door after removing the hoses to the rear. Gates #19607, $11.

Edited: Thu June 24, 2010 at 11:04 PM by Cussboy

Cussboy on Mon August 16, 2010 2:58 PM

Also, recently, the front heater core started leaking. Six 7mm head screws hold on a cover under the dash, then one more holds the heater core in place once that's removed. Then the core just comes out. For a GM, it's a straightforward fix.

Use a 1/4 inch drive socket set with 7mm socket to remove those six screws.

SeppW on Sun August 22, 2010 5:43 PM

So you can get to the core without removing dash?

I recently did my son's 94 S-10 Blazer, and while everything, everyone said dash had to be removed, it did not.

Cussboy on Sun August 22, 2010 6:29 PM

Quote
Originally posted by: SeppW
So you can get to the core without removing dash?

I recently did my son's 94 S-10 Blazer, and while everything, everyone said dash had to be removed, it did not.

YES, 1994 GMC Suburban. I did have to take a knife and cut away a little bit of excess insulation on the forward side to fit the 7mm socket and small extension to one of the forward screws. It took 15 minutes to remove it, first remove the two firewall hoses. I had never removed a heater core on anything before; it was tons easier than replacing an evaporator on my old Mazda truck.

If you PM me with your E-mail address, I can forward to you the PDF of the system someone sent me. But in hindsight it really didn't help - what helped was him telling me just to unscrew the cover, and that is was one of the easiest GM job items there was !!!