Whirring like a horn when driving faster than 65 MPH?

Tiny
GAVIN355Z71
  • MEMBER
  • 2004 CHEVROLET COLORADO
  • 3.5L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 163,000 MILES
Before 65 MPH everything is fine but anything above it there is a loud sound like a horn from the front end that doesn’t change pitch with RPM or speed changing until you go below 65 MPH, at which point it completely stops. I already checked everything I usually do when there’s an odd noise and because I was convinced it was the horn, I even hit the horn to see if it was stuck or there was a wiring issue, but it wasn’t the horn making the noise and it’s only a single tone horn. I looked on forums I belong to that I usually go to for Colorado/Canyon problems and can’t find a single comparable issue.
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Wednesday, September 21st, 2022 AT 10:12 AM

1 Reply

Tiny
MIKE H R
  • EXPERT
Is it like a horn or a howling sound? Have known that a ford will start off slow and increase to a sound. Check the front cowlings to make sure they are tight. Under the truck you could try a piece of tape over different parts of slash pan or around radiator shroud. Let me know what you find.

Mike
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Wednesday, September 21st, 2022 AT 3:38 PM

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