Truck was driven 40 miles and parked.
About a month later the I went out there, retrieved the keys from the house and started the truck normally. Used it to run several errands then parked it again. Keys were removed and put in the house with the rest of the car keys.
6 or 8 weeks later I went out again, got the keys from the house and couldn't get the truck started. That's when I began this thread.
There was no period from the time the truck was shut off to the time an attempt was made to start it that the keys were left in the ignition.