Does anyone have a diagram of the wiring and vacuum lines for the SGM dash heater/air conditioner or possibly troubleshooting for the same. I have one that doesn't put air out of the dash vents on the driver side. There is vacuum that operates all the others.
See if this parts manual helps at all
Thanks Michelle for the help. I was able to find the problem. One of the vacuum solenoids is bad. This unit is obsolete so no parts, but they are going to build me a new valve.
I had one of those solenoids die a year or so ago and FOT was able to get one, don't know if they may be able to get another but you may want to give them a call.
Thanks