How do i figure out what my door code is on my truck or change it to new code?
The manufacturer has a master code programmed into it. With that you can reprogram the door to new numbers. My Ford dealer gave me mine. Your dealer can do the same.
Take it to the dealer.
IDK, sorry, but, modern technology - isn't it wonderful?! (Call a dealer & ask. They might know? Based on the car's serial number?)