I thought I would share the cause of my overheating issue just as information for others if the have the same symptoms.
Problem started at night. I was at stopped at a light and my Temp gauge was slighty higher than normal (dead center of the #2). Strange but no concern. Drove another 10 or so miles and noticed my temp at hit near mid way.
(More stopping than going) I pulled over and checked my reseviour and it was empty so I added what antifreeze I had in the truck and drove home which was a few miles away. (Engine temp still had some play but not much. I got home and saw that my tank had emptied again in a short period so I filled it up once again and parked it for the night
The next morning I checked the truck in the morning and some had leaked onto the ground and some was still left in the tank.
(Sat for about 6 hours) I added some more and decided to drive it to get it checked out. The truck temp would float between normal and just above 210.
At cruising speed it would drop to normal range and at lights it would slowly make its way up. Also I found if I turned my truck off at a light for a min or two and start it (when the light turned green) then temp would rise for a second then quickly go back down.
Once at the shop my coolant was empty again and the mechanic did a compression test. When the truck was running it blew liquid water/antifreeze just behind the fan (water pump) and when the truck was off it would leak a big drop every few seconds or so.
Results bad water pump.
Symptoms: Floating engine temp.
Would rise at lights and fall while driving.
Empties Res. very quickly while driving. Slow leak when parked.
This are just things I observed over the last 24 hours from my truck and were all fixed with the new water pump put in the evening.