WTF...The saga continues

[Grape Ape]

I originally thought I had a bad battery in my H3. I took it to the dealer and they were unable to find a problem. Three days later, it would not start again. I called Hummer Roadside Assistance and they came out to the house. The technician was unable to start it, so he called for a tow. The tow driver shows up, turns the key and it starts. I drive it right to the dealer without shutting it off. It has been at the dealer for four days. They call me today and tell me they cant figure it out. They say that a GM Technician is supposed to come out tomorrow and look at it.
The battery tests as having a full charge. When you turn the key all the dash lights and headlights come on as usual. It does not turn over or click like the battery is low or bad connection at the battery.
I believe there is a safety switch for the clutch that would stop power going to the starter unless you are pushing the pedal down. I mentioned that this could be a problem but they havent been able to give me an answer.
Meanwhile I am stuck with a frickin minivan for a loaner. Out of the 30 days I have owned this vehicle the dealer has had it for 6.
Anyone with a 5-speed have this problem?