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Buzz noise starting at 1,800 RPM's

Tiny
BOB1114
  • MEMBER
  • 1998 CHEVROLET 3500
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 197,000 MILES
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!
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Tuesday, September 4th, 2018 AT 11:39 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
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
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Thursday, September 6th, 2018 AT 10:32 AM
Tiny
BOB1114
  • MEMBER
  • 2 POSTS
Thanks Ken, I will do this.
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Friday, September 7th, 2018 AT 7:50 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Please do. We are interested to see what it is.
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Friday, September 7th, 2018 AT 10:22 AM

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