Well my issue is with my hvac system or controls; I have hot air, and I have air coming out my vents, but my issue is I cant control the air coming out the vents.
My air is coming out all the vents at once, and I cant isolate to come out say just the feet, or just the top windshield vent; any ideas what is gone or the issue that is causing this??
Thanks.





98 j-body sedan

There is a grey or black vacuum line that usually runs out the big grey grommet on the firewall in the wiring harness. Make sure that isn't broken. If that's good then either your vacuum line behind the hvac controls is broken . If that isn't this sue I think there is a vacuum actuator there. I've seen the harness melt and melt the vacuum lines behind the hvac. Check it and let us know.




On the inside my car looks like a fighter jet.