My poor truck!
The HVAC control module has learned values for the door positions. If the battery power is disconnected, it will force the module to relearn the position. If this is done a lot, especially on an older vehicle where the plastic has aged, it can stress the gear as the door gets to the fully open seat and fully closed seat.
Just need to take pics of each difference. Could become a thread of observations since every now & again I came up with something that is/was different.
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bobby099
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