2006 Chevy Trailblazer defroster

Tiny
BKE05
  • MEMBER
  • 2006 CHEVROLET TRAILBLAZER
  • V8
  • 4WD
  • AUTOMATIC
  • 40,000 MILES
I have a whistling coming from the front defroster. This happens when it is cold outside, and only while accelerating. After awhile the noise gets quieter, but is still there.
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Tuesday, January 13th, 2009 AT 1:20 PM

2 Replies

Tiny
MMPRINCE4000
  • EXPERT
You may have some debris in the fan assy. Only way to find out is to take it out.

It could also be an engine/drivetrain noise. Does it do it in Park when revving engine, or just when moving?
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Sunday, January 18th, 2009 AT 6:53 AM
Tiny
BKE05
  • MEMBER
It does it when it's below zero. It does not do it in park, or reving the engine. I can hold down the pedal at a certain point, and get the noise. When I let off of the pedal, it will whistle for a few seconds and then stop. Could this be a vacum issue?
Thanks.
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Sunday, January 18th, 2009 AT 7:43 AM

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