Well, now I know why the clicking sound stopped, what ever it is that was clicking drained the battery and i couldn't start the truck up last night to move it back up. I plugged the charger back onto the battery and let it charge overnight. It's started right up this morning.I don't drive the truck often, so I have a Battery Tender plugged into it. This past weekend I unplugged the battery tender so I could roll the truck back far enough to get my motorcycle out. I haven't plugged it back in, but the clicking sound is gone. So it may very well be the trickle charger!
Still need to figure out the cause, I'll keep you posted.