Humming sound when I accelerate?

2013 CADILLAC CTS
89,000 MILES • 3.0L • 4 CYL • 2WD • AUTOMATIC
Avatar
KJAMIL8012
  • MEMBER
  • 1 POST
Just got my catalytic converters cleaned out expensive too, but (I had a P0420 code) and that’s what they recommended. However, I thought that would fix the humming sound, but it didn’t. I’m not sure what this could be. The sound isn’t loud, but it is noticeable. Nonetheless it only does this when I accelerate. I read it could be when bearings but I’m no mechanic.
Aug 19, 2022 at 1:33 PM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,872 POSTS
Is the noise is front, rear, middle, when you turn? It could be hub bearings? Does it seem like it is coming from the engine or transmission? Can you please shoot a quick video with your phone so I can hear the noise? that way I can tell for sure what's going on.. You can upload it here with your response.
Aug 19, 2022 at 4:24 PM