Front AC problems (dual climate control system - LT model)

What is your question?

Problem first started off with my front AC working intermittently around 80,000 miles. A couple thousand miles later (currently just under 83,000 miles the front AC doesnt even work intermittently. AC still blows cold thru the vents when I'm at speeds above 45/50 mph as long as the recirculate function is off. The rear AC has always and still works fine at all times. After doing some research I discovered a common problem was with the blower motor resistor and the blower motor itself esp chalky if the resistor is corroded. My resistor was corroded so I replaced both the resistor and the blower motor with no improvement. It seems as if I am not getting power at all to the resistor. I believe this may be a problem with a cable or with the dash control module itself. I have not had any codes read yet and I know I should have that done ASAP. What do you think the problem could be? Thanks in advance.