Vacuum line
 

The HVAC control on my 1990 Suburban is stuck blowing air down the heater vent. I examined it closer and turns out, and I found a vacuum line that goes into the firewall that is crispy and falling apart. The vacuum line is very small like 1/8" and made out of plastic. I went to a parts store and they didn't have it. Where can I find this part?

Re: Vacuum line
 

Try to find a supplier that deals in parts for pneumatic / hydraulic systems, they usualy stock this type of hose. They are often used to connect control valves and sutch things.

Re: Vacuum line
 

Ed, I don't know if they call it plastic convoluted tubing or not. Summit Racing has a bunch of tubing, but 1/4" is the smallest I saw on their web site.
When I worked in the paint shop for GM we used Parker Paraflex tubing for our air lines and they were pretty small- 1/8" or so.

Re: Vacuum line
 

Autozone has it in stock as I had to replace some as well.........

Re: Vacuum line
 

Find a heavy truck parts or repair facility and tell them your looking for 1/8 or 5/16 air line, spaghetti line
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