The rear A/C in my 2000 Tahoe LT is blowing HOT. This is obviously a blend door issue whereas regardless of whether I use the front or rear control panel, it does the same thing. Is this the same blend door that controls the front which is located under the glove box? I know there is a mode actuator for the rear located in the right rear quarter trim panel (So says AllData and Chilton). To my knowledge a "mode" actuator controls things such as airflow to the floor, overhead, defrost and all other "modes". Is there a blend door in the rear? Usually the box under the dash will have a divider separating two chambers, one for front and one for rear. Help me out on which part I need to pluck and chuck....It's HOT here! Thanks!!!!