So, some punk stole my extra key fob in my truck (2005 Silverado) plus my work badges. Didnt steal anything else, Radio speakers yada yada yada. So how do I reprogram a different code so he doesnt try n come back for the rest and me have a dead body bleeding in my truck?

 

your going to have to go to the dealership, or find a friend with a tech 2, and invalidate all fobs for the truck then relearn the ones you have

 

The back of the fob should have a 1 or 2. Replace the one that was stolen and program it to the truck. The dealership should know it you have to reprogram the original fob out but I doubt it.