Air And Heater Settings
Thread Starter
4th Gear
Joined: Mar 2003
Posts: 4
Likes: 0
From: lindenhurst ny
Air And Heater Settings
1998 Corvette, 6 speed
Could use some help.
Can't change from defrost setting to air duck setting. Is there some kind of a circuit board that works the heater and air panel, or is there some kind of trick?
Could use some help.
Can't change from defrost setting to air duck setting. Is there some kind of a circuit board that works the heater and air panel, or is there some kind of trick?
Intermediate
Joined: Jul 2004
Posts: 36
Likes: 0
I had the same exact problem...
It was a bitch but I fixed it myself. In the rear of the manifold near the firewall there is a 1/8" vacuum line that can break very easily especially if you had engine work done. You have to loosen the fuel rails and the manifold, pull them forward about 6 inches and you can get to the line. It runs from a black valve type connection on the manifold to the passenger side and down. Also, check under your battery for acid corrosion. There are two 1/8" vacuum lines under there. If you search this forum, you will find alot of diagrams and good info. to do the job yourself. It took me about 4 hours total...
