When I hook up the new battery, my truck starts by itself., Why?

What is your question?

Old battery died. When I replaced it today, the truck is trying to start by itself. It does this as I am putting the ground wire on. I immediately unhook the battery. How can I fix this?

What makes this problem better or worse?

unhooking the battery

How long has your 2001 Chevrolet Silverado 2500 had this problem?

today