Humming noise

2006 PONTIAC GRAND PRIX
186,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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LANCE39ER
  • MEMBER
  • 1 POST
No engine light on. When I'm accelerating at 30 mph and cruising, I feel a slight vibrate and humming that's only heard with the windows up. If fall below 30 mph or above it stops humming. Same thing at 41 mph. What wrong with it?
Jul 29, 2019 at 7:20 AM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Welcome to 2CarPros.

Other than speed, does the sound change pitch or change when turning, accelerating, or stopping? Often times, a wheel bearing will make a humming noise when they start going bad, but the pitch will change when turning.

Also, if you could, let me know approximately where the sound is coming from.

Let me know.

Joe
Jul 29, 2019 at 8:04 PM
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