The vacuum switches for the AC vents on a 1995 GMC Safari all-wheel drive van are located underneath the dashboard. The vacuum lines are also located underneath the dashboard.
The GM Safari was produced from the years 1985 to 2005. The vacuum switches for the AC vents on a 1995 GM Safari all-wheel-drive van are located underneath the dashboard.
The AC does not blow on the main front vents. Only rear and defrost.
what could be wrong is you might have a vacuum leak somewhere or something is disconected in the dash that switches to the vents. I had a problem with my 97 blowing air threw the floor and it was a little vacuum leak that caused it
You have a broken vacuum hose under the hood that supplies the switch.
If the fan is working but not blowing air out of top vents, It is a vacuum hose. You need to take engine cover off to get to hose.
Sounds like you have a vacuum leak - -bad or loose hose or defective diaphragm in one of the vacuum motors
Check all of your vacuum lines from the ac control panel and under your hood. You have lost vacuum somewhere witch controls your vents. There is one of them loose, disconnected or broken. Should be easy to trace. Good Luck!!
I had that problem on my 94 Olds Bravada, a vacuum hose came loose running to the intake plenum.
Because the vents are vacuum operated and when u floor it the motor losses vacuum
You have a vacuum leak. Usually find the hard thin vacuum line that runs from L/H top of the engine acroos the front and over to th eR/H fender broken. But it could be from any part of the vacuum system.
Most temp blend doors have an electric actuator. The defroster, dash vents and floor vents are usually run by vacuum.
Any of the following can cause this......... 1. Bad a/c - heater controller.. 2. Bad a/c - heater controller inside door operation.. 3. Bad, broken or cracked vacuum line/lines..