OK, I guess I have one weird heater!!
Set at 70 degrees on auto everything is fine until it reaches 70 degrees. Then it throws the dash vents wide open and starts blowing in cold outside air. Very uncomfortable in freezing weather!!!
I took it to the dealer yesterday. They were unable to "replicate".!!! On the way home from the dealer it hit 70 degrees and again, started sucking in cold outside air. I left it alone to see what it would do. After a few minutes of sucking in outside air which has now warmed up to 51 degrees it didn't think it was cooling the cab off fast enough so it turned on the AC!!!!
It's going back to the shop Monday. Anyone have similar problems they solved? Thanks.