The AC in Rear want blow in my2002 Escalade

SOURCE: 2004 escalade ac problem

I had the same problem. Took it to an AC guy and they told me it was going to cost $1,400 to replace all kinds of parts. I didn't get it done right away because I went on vacation. When I got back from vacation the air blows cold. It hasn't gone back to blowing hot since.

SOURCE: My 05 Escalade rear air heat is not working- blowing cold air onl

Try blowing ou tthe heat exchanger with compressed air. Make sure it's cool b4 removing hoses..

SOURCE: 2000 escalade rear air works fine. front does not

the rear airconditioning uses a thermal expansion valve to control the amount of refrigerant evaporating into the rear evaporator, the front does not it uses a fixed orifice which cannot compensate for anything. what usually happens is that the refrigerant level is low and the rear expansion valve "steals" all of the available refrigerant.
I would recommend having the system evacuated and recharged by weight first(definetly the cheapest way to go). twice i had to replace the txv for the rear a/c because it was stuck open(in the last 10 years! ... not very common). also ther could be a door in the hvac system that is not covering the heater core. american automobile manufacturers usually heat up the heater core at all times and block the airflow when they don't need it, but air always flows through the a/c evaporator assembly(if the a/c is'nt on it's not cold). and last the cooling fan for the a/c system,and the cooling system on the car, is coupled to the engine by a viscous coupling that could have worn out(very unlikely). if that were the case you should have adequite cooling at speed, but warn up at a stop(also symptom of low charge) i hope that this information helps usual leak sources on gm are the compressors.
good luck

SOURCE: 99' Escalade a/c front vent blows cool air an rear blow cold air.

i have the same problem, my rear a/c blows great very cold, the front a/c blows but it is not cold at all. I had the the a/c seviced and it was vacumed and correct ammount put back in, no problems, the front still blows but it is not cold, i have checked everything and the a/c guy said it might be the door not opening. any help? still not working

SOURCE: 2005 escalade rear a/c blowing cool air .front a/c blowing hot

More than likely, you have a blend door actuator problem. Locate the faulty actuator under the dash, usually on the firewall, and replace.