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I don't know if my reply went or not or just got erased. This may be a duplicate.
The door actuator is working. In trying to adjust the temperature control to check the door actuator, heat started coming when temp was 60 degrees. Nice and warm. As we moved temp control up above 80 degrees, passenger side blows cold air, driver's side cools down. 90 degrees both sides are cold. It is not totally consistent, but we have heat now, just not what it should be. Any suggestions?