I wasn't trying to sound offensive and sorry if I did, I had heard the same thing elsewhere, but mine did it and when I dropped the truck off for service I talked to them about it and they said it would have to recalibrate whenever it was unhooked, they stated it usually does it on its own but sometimes they have to do it, he explained it was an easy process but didn't go into depth on how to do it. I guess because they want to make money later on with having to do it.
To be on the safe side because some dealerships can be greedy just tell them it's been like that since you got it so they don't try to say it's your fault and charge you for it. But hopefully most will recalibrate like mine did on its own.
