Hey there. Just got back from an oil change at the dealership. While i was there the person taking in my wrangler punched in my vin and told me that i need to have my wcm reprogrammed at no charge. They failed to really explain themselves and after about 5 mins of confusion i felt bad for the guy helping so i told him to just do the work. Now enough backstory has anyone else here had this done and what is it for?