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-   1992-1999 (https://www.gmforum.com/1992-1999-91/)
-   -   vents (https://www.gmforum.com/1992-1999-91/vents-203788/)

matt_landon 06-27-2004 05:41 PM

vents
 
when i try to turn on my ac or heater, it wont go throught my vents in the dash. it just goes throught the floor and up by the windshield, does neone know what that mite be because i have no ac or heat and i checked the fuse and that is good, i think that it might be a bad switch

bigJ 06-27-2004 07:39 PM

I'm assuming you have manually knobs in your car. The vent controls run on vacuum pressure. When you turn the vent control knob, does anything happen? When you turn it, do you hear a soft whooshing sound from behind the dashboard?

If not, the vacuum line that controls it may have come loose. Open the hood and look half way between the transmission fluid dipstick and the oil dipstick. On top of the engine there is a "pod" with lots of rubber vacuum tubes coming out. The small one that goes straight off the back and toward the passenger compartment controls the vents. If it fell off, just follow a straight line toward the passenger compartment and you'll see a little nipple where it plugs in.

If the vacuum line is in place, there's a possibility that the plastic tabs inside the vent control knob are broken and the knob isn't catching the switch. Using a pair of needle-nose pliers, pull off the knob and look inside it. If a tab is broken, swap it with the temperature control knob.

As for why you aren't getting heat or AC, I don't know the answer to that one. When's the last time they worked?

matt_landon 06-28-2004 12:56 AM

when i turn the knob to any setting, it makes the noise just nothing comes out of the vents. and it stopped workin about 2 weeks ago, ill check the vacuum lines, and get back to u tomorrow


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