i didnt come on here for any abuse, im more worried about the head gasket problem now and whether or not i should drive the damn thing, and no i dont know why the heat is now working with 1 stupid vac pipe taken off
take it easy please. you're not getting abuse from here. there are lots of people trying to help!
Right, let me see if I can explain...
The omega cooling/heating set up is complex. on the V6, there are lots of bits that can go wrong. Very rarely do you ever get a head gasket failure but unless you are very familiar with the vauxhall V6 powerplants fitted the omega you will often suspect the HG when it is in fact something else. So, onto what the something else could be
The HBV is a Heater Bypass Valve. this is a little plastic valve that sits on the back of the engine that diverts hot water away from your heater matrix when vacuum is applied to it. Now i cannot see your pictures on facebook but I am guessing the vacuum pipe you removed is connected to this valve. removing the pipe, means that the valve no longer diverts and hey presto, hot water flows to the heater matrix - you get heat.
the solenoid referred to by TB is a switch that turns the vacuum on - if this fails then you have a permenant vacuum and the bypass valve is always diverting heat from the matrix. i'm not surprised that TB said he would not fix it, it is a real pain to do! if you had fixed it, you would have been further forward - your heating would work properly
Now it seems like you have a water leak somewhere, so this needs to be traced. It could easily be something simply like a water pump failing or even a small leak in a pipe. you need someone to carefully examine the car when it is hot for any trace of a leak
good luck