1986coupe

I have a 1993 Corvette convertible. The electronic head unit lights up and seems to function properly. I can press the buttons and they light up properly. The problem is that it always only blows through the defrost outlet. Any thoughts or recomendations?

antfarmer2

might just be a vacumme line

-sinner-

I had the same problem on my MIL's 1993 Chevy Blazer--it was, indeed, just a vacuum line that had worn through. I cut it back and reattached and it worked perfectly. If memory serves, it came out of the firewall in front of the driver under the hood, and attached to something on the firewall, fairly close to the center line. It was pretty easy to see where it had worn through and correct it. I hope your trouble is as obvious as this was.

sm

Cliff Harris

Try the HVAC diagnostics: