Buzzing humm in the dash

**NOVAZ27** · 10-08-2009

The moment I turn on the ignition of my 2006 GT. I get a low level buzzing humm in the dash. It seems to be relay controled since when I turn the key off the buzzing ceases and an audible RELAY click is heard. Before I dig into the dash, wiring, etc. I thought I would get some input from the FORUM'S GURU"S. I have looked in the search forum for answers but nothing seems to pinpoint to what the buzz I hear is. Thanks for any replies in advance.
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**michaelbm** · 10-08-2009

do you have dual climate control or single?

**NOVAZ27** · 10-08-2009

Thanks for the reply. Yes the GT does have the dual climate control system, heated leather seats etc. Everything seems to be working as it should.

**ZR1Vette09** · 10-08-2009

you sure it's not the speakers hissing?

**michaelbm** · 10-09-2009

Under your ignition switch you will see a little vent hole which contains the cabin temp sensor and has a little fan, Im thinking it could possibly be from this if the fan is wearing out, check it out and let us know what you find...

**tvfd22** · 04-30-2011

I know it's been a while since this was posted, but if it can help someone in the future...

I had the same issue in my '05 GTP, and, along michael's line of thinking, it turned out to be a temperature sensor for the Auto Climate Control, which I believe was located somewhere behind the radio/knee panel on the dash.