Ok, I checked under the hood as Mike suggested to make sure all vacuum lines in place and secure. Everything appeared to be correct and in place. Also determined that you could figure out if vacuum was working by turning on blower & AC with out the engine running. I identified 3 vacuum control units closest to driver under dash in a line running up to top of dash. First one appears to switch between hot and cold. The top two seem to work together with the center one controlling the bi-level and floor flow. That one appears to have almost no movement when you switch it back and forth so it is suspect along with vacuum control unit at this point. I have also determined that on all settings the largest volume of air is coming out the defrost area . The center unit has two vacuum lines running to it , the others only have one. That's as far as got , need some else to do some switching back and forth while I check lines. That's tonight's project, will report back tomorrow
JD 2K-TJ
There are some simple truths...And the dogs know what they are." Joseph Duemer