Never feel bad for bringing your car in. ALL of us have been wrong at one point or another. Its their job to look at your car and fix what needs to be fixed. Half the time your intuition is right.
Im not very knowledge able the Vue (im an S-series guy haha) , however I do know that the rumbling noise is not right. Dont leave untill its fixed.
Siccarman or another membe rmay have some ideas for you tho
