Searched through many posts and could not find a similar situation. I know its probably simple, but the rear control will adjust the fan speed and modes between floor and roof vents, but the temp will not change and stays warm no matter what the setting on the control. I assume it is a blend door actuator? I have an 03 TB EXT LT with the digi controls if that helps. Front works as expected with the controls both hot and cold. Thanks in advance.