OK, Had 4WD actuator problem so I replaced the transfer case vacuum switch (PITA) and blew out the vacuum lines and vent to the switch-problem fixed! but I see the tranny fluid in the vacuum line that goes to the heater/ac controls--I'd like to clean those lines out as well--how do I get to the vacuum lines under the dash? any help from you fine folk would be greatly appreciated...... Right now I just see that a plastic vacuum line goes into the dash somewhere near the E-brake areaThank You all Very Much- you are a great help

 

To do it right, you really need to tilt the dash forward and blow out all the lines that go to the 3 actuators. Definitely a PITA, but the only sure way to clean them all out. Start reading here.