The last two days my truck has been making a thumping/grinding type sound for about 3 seconds when I select the Defrost/Floor button on my heater.
This only happens when it sits overnight. The heater/AC works fine. Sounds doesn't repeat after warm up. Dropped it off at the dealer this am.
The dealer stated they will need to duplicate the sound and it may possibly be the Blend Door Actuator. Anyone ever have this done? The Service guy said if that is the issue then it most likely will be a "all day job"
Now that the holidays are over and no money, I'm starting to panic. Has anyone on here have had this repair done?