Thanks for that info. My escalade does not have the digital controls, just the regular knobs. Just a quick question. Did your blower stop working? I mean did you have no air blowing from the vents? If your blower still worked. You may be on to something that I need to look at.
This is such a frustrating problem. Since there's soooooo many issues with the blend doors on the Escalades and Tahoe's, almost everybody jumps straight to that as the problem with my Escalade. But, in my case, it's absolutely not the problem.
The fan/blower works perfect. The air out of the vents It gets hot when I move the knob to red and, 90% of the time, it gets ice cold when I move the knob to blue. But the 10% of the time that it doesn't work is miserable. I mean, it's not blowing hot air, it just blows ever-so-slightly cooled air. Probably like 85* or so. Of course when it's 110 degrees outside slightly cooled air from the vents is not going to do much.
I think the problem may be related to something in rear AC/heater area. I assume with this split system, having two expansion valves and evaporators but only one compressor, if one expansion valve acts up then the entire system pressure could be affected. Since the front expansion valve (orifice tube) has been replaced twice, I'm gonna tell the shop to replace the rear valve next time I take it in.
Wednesday, October 9th, 2013 AT 4:16 PM