4.8 Coolant bleed procedure

[ksutjh]

So I have done some searching around and seem to get differing opinions on how to properly bleed the coolant system on the 4.8. Most everything you see is for the electric water pump equipped 6 cyl's. I have also seen some information that the 4.8 is pretty much self bleeding, just fill it up and let it run. I replaced the upper radiator hose a month or so ago, have noticed the coolant level going down a bit over that time. Now that it is really cold here in Minnesota, I have found that I dont have much heat at all. The passenger side is completely cold and the drivers side is luke warm at best. Engine coolant temp is correct at about 100C and the radiator outlet temp varies as I would expect when sitting or driving with cold air blowing over the radiator. Id like to rule out any air bubbles present that are keeping the coolant from effectively reaching the heater cores. Any help would be greatly appreciated!