Buzz noise starting at 1,800 rpm's

1998 CHEVROLET 3500
197,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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BOB1114
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  • 2 POSTS
I have owned this truck for three years and put 15,000 miles on it. It has buzzed since I have owned it. At 1,800 rpm's only when driving it, going through the gears. I have changed the spider, all new top side gaskets. No change, no performance issues at all. Just cannot find the buzz. Will not do this in park. Can it be in the EGR system? Help driving me nuts!
Sep 4, 2018 at 11:39 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like it could be a loose heat shield, but to be sure I need to hear the noise. Can you please shoot a quick video with your phone so we can hear the noise? That would be great. You can upload it here with your response. Cheers, Ken
Sep 6, 2018 at 10:32 AM
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BOB1114
  • MEMBER
  • 2 POSTS
Thanks Ken, I will do this.
Sep 7, 2018 at 7:50 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Please do. We are interested to see what it is.
Sep 7, 2018 at 10:22 AM
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