Hey everyone,

Storing my car for the winter and when I've been running it lately in the garage I've noticed a loud hissing coming from right behind the HVAC controls even when the fan is completely shut off and everything is in the off position. I've also noticed when I turn the HVAC to the Vent position, in the middle I believe, it hardly blows. AC blows really hard. Not sure what this is. Possible just a hose behind there is broken or off the control??? Let me know guys.

Thanks in Advance,
Rob
1995 Camaro 3.4

 

Just pop cover off and unscrew the controls off and look around.

 

I had a hissing in my 92 RS and my 79 Berlinetta . I've also heard it in other gm vehicles. I know it didn't hurt anything and I drove my 92 for 5 years before I traded it in with the noise. It should subside the longer you drive. I don't know what causes it.

 

Maybe an animal has claimed that area for themselves considering you store your car for the winter they found a new home there.

Sorry, I just smoked some weed and feel giddy! We can smoke weed in Canada ya know!

 

yea, my 92 RS does it too, thank god the 98 doesn't because its so F**KING annoying!!! everytime I step on the gas it progresses... Im poppin the HVAC controls off to see, and when I find out... Ill inform you!