I have no vacuum to my controller. Alldata trouble shooting guide says to check vacuum at the intake, then go to the vacuum tank and check to see if you have the same pressure as the intake and then check at the controller. Accordding to gm parts site there is a vacuum tank. see attachement part # 24
Hmm, not sure there. Maybe its on the other side of the firewall? What controller are you referring to? Temp control? Regardless, whatever you're trying to diagnose, try checking vacuum at the intake, then the controller, and worry about the tank if its different.
If the line is broken, you can repair it. I'm assuming this is a hard plastic line? Get a piece of vacuum hose that fits tightly over the hard line, and splice the two broken ends together with it. Works like a charm.