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1998 GMC Jimmy Loud Airplane Noise

Tiny
98JIMMYPROBS
  • MEMBER
  • 1998 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
I have a 98 Gmc jimmy that has a loud airplane sound occuring. I dont hear this noise all the time but when I do it gets louder when I accelerate. Can anybody help me figure this thing out. Thanks in advance
Thursday, October 1st, 2009 AT 11:31 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
The sound is most likely from the fan. The vehicle has a fan clutch that is to lock up at a certain temp. When the temp is met, the fan spins full speed and makes a sound like you described.
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Monday, October 5th, 2009 AT 8:55 AM

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