Ok so here is my problem, i recently blew out my heater core and during the process of it being blown out it would evaporate coolant into my cab so i had no other form of transportation so i had to drive it and just filled it up every day but besides all that ive had the heater core replaced but when i was driving it everytime i turned the truck off about two minutes later the doors would lock and the dash lights would magicly come on and sometimes i had to turn the key all the way forward and backward a few times to finally get the truck to turn off and also now that it is fixed now my headlights dont turn off anyone got any ideas as to what could be going on?