WHY DOES MY 2005 SATURN VUE REV UP MAKING HUMMING SOUND WHILE DRIVING?

SOURCE: 2005 Saturn Vue - Airbag dash light intermittently on

THE AIR BAGS TURN OFF AND ON BECAUSE IT GOES BY WEIGHT... AND IT ALSO GOES OFF WHEN YOU ARE GOING A LOWER SPEED AND WHEN YOU ARE GOING A HIGHER SPEED THEY WILL COME BACK ON.

SOURCE: humming while driving

Hub bearings,notorious for these,expensive parts.They go bad on the front and the rear.YOu need to find out which one is the noisey one,maybe more than one.I had a customer that we had to replace all four on within 6 weeks.Hope this helps